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Steel Foam Inspired from Human Bones

Historically, the concept to create synthetic cellular substances have to have been stimulated by means of herbal materials such as pumice stone, timber or bone that have all been in use for a lengthy time due to their special properties. Since the 20th century, cell substances are engineered from dense primary materials, their houses are investigated systematically and it is decided in which situations they are the highest quality to their dense counterparts. The matrix fabric of cellular substances or, greater specific, foams can be a polymer or another organic material, a glass, a ceramic or even a metal. Bones have an internal structure similar to a honeycomb, which makes them rigid yet relatively light. Bones are more than just the scaffolding that holds the body together. it comes in all shapes and sizes and have many roles. Mohd Umair | Dr. D. K Chauhan | Tanveer Ahmad Wani "Steel Foam Inspired from Human Bones" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-1 , December 2018, URL: https://www.ijtsrd.com/papers/ijtsrd18993.pdf Paper URL: http://www.ijtsrd.com/engineering/civil-engineering/18993/steel-foam-inspired-from-human-bones/mohd-umair<br>

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Steel Foam Inspired from Human Bones

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  1. International Journal of Trend in International Open Access Journal International Open Access Journal | www.ijtsrd.com International Journal of Trend in Scientific Research and Development (IJTSRD) Research and Development (IJTSRD) www.ijtsrd.com ISSN No: 2456 - 6470 6470 | Volume - 3 | Issue – 1 | Nov – Dec 2018 Dec 2018 Steel Foam Inspired Steel Foam Inspired from Human Bones rom Human Bones Mohd Umair1, Dr. 1Ph.D, 2Technical Director Noida International University, Greater Noida, ional University, Greater Noida, Uttar Pradesh, India Dr. D. K Chauhan2, Tanveer Ahmad Wani Technical Director, 3Professor of Physics & Material Tanveer Ahmad Wani3 , India ABSTRACT Historically, the concept to create synthetic cellular substances have to have been stimulated by means of herbal materials such as pumice stone, timber or bone that have all been in use for a lengthy time due to their special properties. Since the 20th ce substances are engineered from dense primary materials, their houses are investigated systematically and it is decided in which situations they are the highest quality to their dense counterparts. The matrix fabric of cellular substances or, greater specific, foams can be a polymer or another organic material, a glass, a ceramic or even a metal. Bones have an internal structure similar to a honeycomb, which makes them rigid yet relatively light. Bones are more than just the scaffolding that holds the body together. it comes in all shapes and sizes and have many roles. Key words: Bones, Timber, Foam, Metal, Cellular INTRODUCTION Flexible but rigid like a human bone away capable of bearing loads. A new sort of material, made of steel foam, resembles the inside of a bone in phrases of its structural configuration. It additionally promotes in growth into surrounding bones. The Creation of steel foam with f structure, inspired through the spongy nature of bone. The metal foam does a higher job than stable steel when it comes to matching the mechanical properties of bone, such as flexibility, and this encourages more superb bone regrowth. The mineral calcium phosphate hardens this framework, giving it strength. More than 99 body's calcium is held in our bones. An organic tissue is regularly described in terms of its structural and material proper-ties. Structural homes signify the ties. Structural homes signify the tissue in its intact form. residences are represented by a relationship be pressure and deformation, or s MATERIALPROPERTY The behaviour of the material comprising the tissue and to a first approximation is independent of the dimension of the tissue. The material properties are typically expressed in terms of the stress strain relationship of the material. The energy of a material, which is the breaking or last power underneath different modes of loading, such as tension, compression, torsion, or bending, will be different, as will the corresponding modulus of elasticity or stiffness, without bending. The stiffness of a material represents ability to withstand deformation. Stiffness is commonly characterized with the support of the slope of the linear place of a stress curve, also referred to as Young’s modulus when examined underneath tension. To describe the slope of differe strain curve, a tangent modulus is frequently A tangent modulus ought to have related with it a strain cost or a vary of strains. There can be exclusive sorts of module depending on the loading sorts (e.g., shear modulus, compression modulus). The larger the stiffness, the higher the pressure required to reason a given deformation. If the stress in a material is at once proportional to the pressure for traces up to the elastic limit, the material is known as a Hooke a materia Bones Composition Bone is a composite material consisting of each fluid and stable phases. Two predominant stable phases, one organic and every other inorganic, supply bones their difficult structure. An organic extracellular mixture nous matrix is impregnated with inorganic materials, in particular materials, in particular Historically, the concept to create synthetic cellular substances have to have been stimulated by means of herbal materials such as pumice stone, timber or bone that have all been in use for a lengthy time due to their special properties. Since the 20th century, cell substances are engineered from dense primary materials, their houses are investigated systematically and it is decided in which situations they are the highest quality to their dense counterparts. The matrix form. Important structural residences are represented by a relationship between stress and strain. of the material comprising the tissue and to a first approximation is independent of the dimension of the tissue. The material properties are typically expressed in terms of the stress strain relationship of the material. The energy of a material, s the breaking or last power underneath different modes of loading, such as tension, compression, torsion, or bending, will be different, as will the corresponding modulus of elasticity or eater specific, foams can be a polymer or another organic material, a Bones have an internal structure similar to a honeycomb, which makes them rigid yet relatively light. Bones are more than just the scaffolding that s the body together. it comes in all shapes and The stiffness of a material represents the material’s ability to withstand deformation. Stiffness is commonly characterized with the support of the slope of the linear place of a stress curve, also referred to as Young’s modulus when examined underneath tension. To describe the slope of different areas of the stress strain curve, a tangent modulus is frequently defined. tangent modulus ought to have related with it a strain cost or a vary of strains. There can be exclusive sorts of module depending on the loading sorts (e.g., mpression modulus). The larger the stiffness, the higher the pressure required to reason a given deformation. If the stress in a material is at once proportional to the pressure for traces up to the elastic limit, the material is known as a Hooke a material. Bones, Timber, Foam, Metal, Cellular bone and straight away capable of bearing loads. A new sort of material, made of steel foam, resembles the inside of a bone in phrases of its structural configuration. It additionally promotes in growth into surrounding reation of steel foam with foam like structure, inspired through the spongy nature of bone. The metal foam does a higher job than stable steel when it comes to matching the mechanical properties of bone, such as flexibility, and this encourages more Bone is a composite material consisting of each fluid and stable phases. Two predominant stable phases, one organic and every other inorganic, supply bones their difficult structure. An organic extracellular calcium phosphate hardens this framework, giving it strength. More than 99 % of our body's calcium is held in our bones. An organic tissue is regularly described in terms of its structural and pregnated with inorganic hydroxyapatite hydroxyapatite Ca10 Ca10 @ IJTSRD | Available Online @ www.ijtsrd.com www.ijtsrd.com | Volume – 3 | Issue – 1 | Nov-Dec 2018 Dec 2018 Page: 492

  2. International Journal of Trend in Scientific Research and Development (IJTSRD) ISSN: 2456 International Journal of Trend in Scientific Research and Development (IJTSRD) ISSN: 2456 International Journal of Trend in Scientific Research and Development (IJTSRD) ISSN: 2456-6470 (PO4)6(OH)2 (consisting of the minerals calcium and phosphate). Unlike collagen, apatite crystals are very stiff and strong. However, a bone’s energy is greater than that of either apatite or collagen because, similar to what happens with concrete, the softer factor prevents the stiff one from brittle cracking, whilst the stiff element prevents the tender one from yielding. The natural material gives bone its flexibility, while the inorganic fabric offers bone its resilience. Calcium and phosphate account for roughly 65 of a bone’s dry weight. Collagen fibres approximately 95% of the extracellular matrix and account for 25–30% of the dry weight of bone. Surrounding the mineralized collagen ground sub-stance consisting polysaccharides, or glycosaminoglycan’s (Gags), primarily in the structure macromolecules referred to as proteoglycans. The Gags serve to cement collectively the number of layers of mineralized collagen fibres. Water bills for up to 25% of the total weight of bone, with about 85% of the water being placed in the natural matrix around the collagen fibres and ground substance. The different 15% is positioned in canals and cavitie house the bone cells. Working Structure Bones are recognized as either cancerous (also referred to as trabecular or spongy) or cortical ( referred to as compact); see Figs. 2.2a and b. Cortical bone is roughly 4 instances the mass of bone, in any lengthy bone. The primary material comprising cancellous and compact bone seems identical; thus, the big difference between the two is the degree of porosity and the organization. The porosity of cortical bone degrees from 5 to 30%, while cancellous bone’s porosity levels from 30 to 90%. Bone porosity is now not fixed and can trade in response to altered loading, disease, and the growing old process. The fibrous layer protecting all bones is the peritoneum. This membrane covers the entire b without the joint surfaces, which are protected with articular cartilage. There are several terms used to describe the complex structure of bone at a finer resolution. Both cortical and cancelous bone may additionally incorporate two sorts of fundamental architecture, woven and lamellar. Bone can additionally be described as principal or secondary bone; regions within cortical bone are often secondary bone; regions within cortical bone are often (PO4)6(OH)2 (consisting of the minerals calcium and phosphate). Unlike collagen, apatite crystals are very stiff and strong. However, a bone’s energy is greater te or collagen because, similar to what happens with concrete, the softer factor prevents the stiff one from brittle cracking, whilst the stiff element prevents the tender one from yielding. The natural material gives bone its flexibility, while nic fabric offers bone its resilience. Calcium and phosphate account for roughly 65–70% described as either aversion or this may additionally be discovered in any textbook on the biomechanics of bones. Bone shows a linear vary in which the stress will increase in proportion to the strain. The slope of this region is described as Young’s modulus, or the elastic modulus. An illustration of the material houses of bone relative to other substances is shown in Fig. bone relative to other substances is shown in Fig. 1 or laminar. Details about this may additionally be discovered in any textbook on the biomechanics of bones. Bone shows a linear vary in which the stress will increase in proportion to the strain. The slope of this region is described as Young’s modulus, or the elastic us. An illustration of the material houses of fibres compose approximately 95% of the extracellular matrix and 30% of the dry weight of bone. zed collagen fibres is a stance consisting polysaccharides, or glycosaminoglycan’s (Gags), primarily in the structure macromolecules referred to as proteoglycans. The Gags serve to cement collectively the number of of of protein, protein, of of complicated complicated Comparative properties of different materials Comparative properties of different materials STEEL FOAM POROSITY Any metallic with a fluid phase (liquid or, most usually, gas) distributed in the course of it ought to be categorized as a porous steel, even though in practice the learn about of these materials is normally constrained to these displaying big degrees of (greater than 50%) and the place the second phase regions are uniformly distributed in the course of the material (unlike the case of a solid section with a giant inside pore, for example). In these structures, the regions of free house are known the stable phase is referred to as the dense or dad or mum steel, with the character structural elements being termed struts, if they are thin relative to the pores, and being referred to as they are larger. . Water bills for Any metallic with a fluid phase (liquid or, most usually, gas) distributed in the course of it ought to be categorized as a porous steel, even though in practice the learn about of these materials is normally constrained to these displaying big degrees of porosity (greater than 50%) and the place the second phase regions are uniformly distributed in the course of the material (unlike the case of a solid section with a giant inside pore, for example). In these structures, the regions of free house are known as pores or cells and the stable phase is referred to as the dense or dad or mum steel, with the character structural elements being termed struts, if they are thin relative to the pores, and being referred to as picture partitions if up to 25% of the total weight of bone, with about 85% of the water being placed in the natural matrix around and ground substance. The different 15% is positioned in canals and cavities that recognized as either cancerous (also referred to as trabecular or spongy) or cortical (also referred to as compact); see Figs. 2.2a and b. Cortical bone is roughly 4 instances the mass of cancerous bone, in any lengthy bone. The primary material comprising cancellous and compact bone seems identical; thus, the big difference between the two is the degree of porosity and the organization. The porosity of cortical bone degrees from 5 to 30%, ancellous bone’s porosity levels from 30 to 90%. Bone porosity is now not fixed and can trade in response to altered loading, disease, and the growing Femur 1500 TO 1750 C 1750 C 124 ± 1.1 Femur 1500 TO Steel Foam 1500 TO 1600 C PROPERTY OF BONES Ultimate tensile strength (MPa) 124 ± 1.1 275 The fibrous layer protecting all bones is the peritoneum. This membrane covers the entire bone without the joint surfaces, which are protected with Ultimate compressive strength (MPa) 107 ± 4.3 107 ± 4.3 188 700TO 700TO 1400 1400 500 TO 2000 Density kg/m3 There are several terms used to describe the complex structure of bone at a finer resolution. Both cortical and cancelous bone may additionally incorporate two tal architecture, woven and lamellar. Bone can additionally be described as principal or Biological properties Foams made from titanium, magnesium and NiTi are regularly counselled for use as biomaterial implants even if no biological trying out is performed (Thieme et al., 2001; Wen et al., 2002a; Oh et al., 2003; et al., 2001; Wen et al., 2002a; Oh et al., 2003; Foams made from titanium, magnesium and NiTi are for use as biomaterial implants even if no biological trying out is performed (Thieme @ IJTSRD | Available Online @ www.ijtsrd.com www.ijtsrd.com | Volume – 3 | Issue – 1 | Nov-Dec 2018 Dec 2018 Page: 493

  3. International Journal of Trend in Scientific Research and Development (IJTSRD) ISSN: 2456 International Journal of Trend in Scientific Research and Development (IJTSRD) ISSN: 2456 International Journal of Trend in Scientific Research and Development (IJTSRD) ISSN: 2456-6470 Dunand, 2004; Nomura et al., 2005; Nouri et al., 2010) and sufficiently excessive purities for use in the body have been executed (Laptev et al., 2004; Hong et al., 2008). This is largely as the dense variations of these metals are presently used, or are leading candidates for authentic implants, and the inertness is known. Titanium foams have been treated to create a bottom appropriate for implants (Wen et al., 2002b). Porous titanium has been uncovered to simulated body fluid after bottom redress to grant a applicable bottom for cell attachment (Hong et al., 2008). While this gave exceptional porous texture to the surface of the foam, which should perform well, no cell checks have yet been reported. Highly porous (90%) Ti has been subjected to cell culture tests, by means of seeding MC3T3-E1 osteoblast-like cells on samples of foam in cell tradition means, with lifestyle instances of up to three days (Li et al., 2005). to be located that cells connected to the material surface and unfold and that there was once proof of extracellular matrix production. Magnesium degrade in the physique environment, producing compounds that can be excreted through biological approaches and is consequently attractive for degradable implants. In assessments in a saline answer representing the breakdown of porous magnesium has been with, as expected, the dissolution rate being accelerated via growing the porosity (Zhuang et al., 2008).Porous NiTi is specifically eye implants into bone, owing to the simil stress strain curve possible between the two substances (like bone, NiTi can display hysteresis within the super elastic region) (Bansiddhi et al., 2008). Foams of NiTi have been produced and implanted into animal models (rabbits) (Kim et al 2004). In these tests, no exasperation was observed and after six weeks bone ingrowth came about in all specimens examined. However, in the absence of a manipulate check on different porous materials it is tough to say how this behaviour ranks with diff types. As more candidate porous biomaterials are produced from steel powders, a more comprehensive trying out programme will be required. Mineral Storage, Energy Storage in Bones 1. On a metabolic level, bone tissue performs several crucial functions. For one, the bone matrix acts as a reservoir for a variety of minerals necessary to the functioning of the body, specially calcium, and phosphorus. These minerals, included into bone phosphorus. These minerals, included into bone Dunand, 2004; Nomura et al., 2005; Nouri et al., 010) and sufficiently excessive purities for use in the body have been executed (Laptev et al., 2004; Hong et al., 2008). This is largely as the dense variations of these metals are presently used, or are leading candidates for authentic implants, and the bio tissue, can be launched returned into the bloodstream to maintain tiers wished to assist physiological processes. Calcium ions, for example, are crucial for muscle contractions and controlling the flow of other ions involved in the transmission of nerve impulse 2. Bones also serves as a site for fat storage and blood mobile production. The softer connective tissue that fills the indoors of most bone is referred to as bone marrow (Figure 4). There are two types of bone marrow: yellow marrow and purple marrow. Yellow marrow carries adipose tissue; the triglycerides stored in the adipocytes of the tissue can serve as a source of energy. Red marrow is the place manufacturing of blood cells blood cells, white blood cells, and plat produced in the red marrow. e, can be launched returned into the bloodstream to maintain tiers wished to assist physiological processes. Calcium ions, for example, are crucial for muscle contractions and controlling the flow of other ions involved in the transmission of nerve impulses. also serves as a site for fat storage and blood mobile production. The softer connective tissue that fills the indoors of most bone is referred to as bone marrow (Figure 4). There are two types of bone marrow: yellow marrow and ellow marrow carries adipose tissue; the triglycerides stored in the adipocytes of the tissue can serve as a source of energy. Red marrow is the place manufacturing of blood cells takes place. Red blood cells, white blood cells, and platelets are all produced in the red marrow. foams have been pre- to create a bottom appropriate for implants (Wen et al., 2002b). Porous titanium has been body fluid after bottom redress to grant a applicable bottom for cell Hong et al., 2008). While this gave an exceptional porous texture to the surface of the foam, which should perform well, no cell checks have yet reported. Highly porous (90%) Ti-6Al-4V alloy has been subjected to cell culture tests, by means of haematopoiesis the like cells on samples of foam in cell tradition means, with lifestyle instances of up to three days (Li et al., 2005). It used to be located that cells connected to the material surface and unfold and that there was once proof of production. Magnesium can degrade in the physique environment, producing compounds that can be excreted through biological approaches and is consequently attractive for degradable implants. In assessments in a saline . Head of Femur Showing Red and Yellow Marrow. The head of the femur contains both yellow and red marrow. Yellow marrow stores fat. Red marrow is responsible for haematopoiesis. : modification of work by Figure2. Head of Femur Showing Red and Yellow Marrow. The head of the femur contains both yellow and red marrow. Yellow marrow stores fat. Red marrow is responsible for (Credit: modification of “stevenfruitsmaak”/Wikimedia Commons) “stevenfruitsmaak”/Wikimedia Commons) e body body environment, environment, breakdown of porous magnesium has been observed with, as expected, the dissolution rate being accelerated via growing the porosity (Zhuang et al., is specifically eye-catching for implants into bone, owing to the similarities in the stress strain curve possible between the two substances (like bone, NiTi can display hysteresis region) (Bansiddhi et al., 2008). Foams of NiTi have been produced and implanted into animal models (rabbits) (Kim et al., 2004). In these tests, no exasperation was observed and after six weeks bone ingrowth came about in all specimens examined. However, in the absence of a manipulate check on different porous materials it is tough to say how this behaviour ranks with different types. As more candidate porous biomaterials are produced from steel powders, a more comprehensive Correlation between Structure and Function The “crimp pattern” and the interplay and cross linking of elastic, reticular, and collagen ligaments are critical for ordinary joint mobility. These features enable ligaments to have a confined vary of strains over which they produce minimal resistance to movement. As a result, joints may without problems be moved in certain instructions and over positive ranges. Additionally, if a joint is displaced towards the outer restriction of some normal vary of motion, the pressure in precise ligaments of those joint increases, causing recruitment of collagen fibres from their “crimp” kingdom to a str condition. Fibre recruitment causes the ligament to quickly enlarge its resistance to in addition elongation, for this reason stabilizing the joint. Another feature of ligaments that may also be vital for retaining joint integrity is their neura Ligaments comprise a range of sensory receptors that Ligaments comprise a range of sensory receptors that Structure and Function The “crimp pattern” and the interplay and cross- linking of elastic, reticular, and collagen fibres of ligaments are critical for ordinary joint mobility. These features enable ligaments to have a confined vary of strains over which they produce minimal resistance to movement. As a result, joints may without problems be moved in certain instructions and over positive ranges. Additionally, if a joint is displaced towards the outer restriction of some normal vary of motion, the pressure in precise ligaments of , causing recruitment of collagen from their “crimp” kingdom to a straightened recruitment causes the ligament to quickly enlarge its resistance to in addition elongation, for this reason stabilizing the joint. Mineral Storage, Energy Storage in Bones a metabolic level, bone tissue performs several crucial functions. For one, the bone matrix acts as a reservoir for a variety of minerals necessary to the functioning of the body, specially calcium, and Another feature of ligaments that may also be vital for is their neural network. @ IJTSRD | Available Online @ www.ijtsrd.com www.ijtsrd.com | Volume – 3 | Issue – 1 | Nov-Dec 2018 Dec 2018 Page: 494

  4. International Journal of Trend in Scientific Research and Development (IJTSRD) ISSN: 2456 International Journal of Trend in Scientific Research and Development (IJTSRD) ISSN: 2456 International Journal of Trend in Scientific Research and Development (IJTSRD) ISSN: 2456-6470 Reference 1.Fung YC (1993) Biomechanics: mechanical properties of living tissues, 2nd edn. Springer, New York 2.Hawkins D. (2001) Tissue mechanics. Human performance laboratory, University of California, Davis. Lecture available at: 3.Mow VC et al (1991) Structure and function of articular cartilage and meniscus. In: Mow VC, Hayes WC (eds) Basic orthopedic Raven, New York 4.Fish R. (2000) Sinovial joints, PhD Thesis. Department of Biological Sciences, University of Manchester, Kingston, Canada. 5.Akeson WH, Woo SL-Y, Amiel D, Frank CB (1984) The chemical basis of tissue repair. In: Funk FJ, Hunter LY (eds) Rehabilitation of the injured knee. CV Mosby, St. Louis, pp 93 6.Menard D, Stanish WD (1989) The aging athlete. Am J Sports Med 17(2):187 7.Gray H (2000) Anatomy of the human body. Lea & Febiger, Philadelphia, Bartleby.com, 2000. 8.Fung YC et al (eds) (1972) Biomechanics: its foundations and objectives. Englewood Cliffs, NJ 9.Gallagher RH et al (eds) (1982) Finite elements in biomechanics. Wiley, New York 10.Ratner BD, Hoffman AS, Schoen FJ, Lemons JE (eds) (1996) Biomaterials science: an intro to materials in medicine. Academic, New York to materials in medicine. Academic, New York may additionally become aware of joint position, velocity, and acceleration. This function may additionally not directly contribute to retaining joint integrity by using initiating the recruit decruitment) of dynamic stabilizers such as muscles. More work is wanted in this area to deter role of these neural components. Conclusion Lightweight construction materials suitable for extremely stressed and safety-relevant components such as car wheel as well as bones replacement. The variability measured in properties of steel despite it being the best foam available to date, is very large as compared to that of its parent implies that further refinements in manufact extensive production in construction. Methodologies are necessary in order to improve the reliability of foams, which is a must in high performance applications that demand low failure probability and high reproducibility. In terms of strategies generating mechanical test before ascertaining any property, especially when conducting parametric studies. Acknowledgement We thank Drs. D. K Chuhan, Tanvir Many useful discussions. Technical support for this work through a grant from the construction Research of NIU in India is gratefully acknowledged. may additionally become aware of joint position, velocity, and acceleration. This function may additionally not directly contribute to retaining joint integrity by using initiating the recruitment (or decruitment) of dynamic stabilizers such as muscles. More work is wanted in this area to deter-mine the Fung YC (1993) Biomechanics: mechanical properties of living tissues, 2nd edn. Springer, Hawkins D. (2001) Tissue mechanics. Human performance laboratory, University of California, Davis. Lecture available at: Mow VC et al (1991) Structure and function of articular cartilage and meniscus. In: Mow VC, Hayes WC (eds) Basic orthopedic biomechanics. Lightweight construction materials suitable for relevant components such as car wheel as well as bones replacement. The variability measured in properties of steel foam, it being the best foam available to date, is very large as compared to that of its parent metal. This implies that further refinements in manufacturing for construction. Methodologies are necessary in order to improve the reliability of foams, which is a must in high performance applications that demand low failure probability and high reproducibility. In terms of strategies for Fish R. (2000) Sinovial joints, PhD Thesis. Department of Biological Sciences, University of Manchester, Kingston, Canada. Y, Amiel D, Frank CB (1984) The chemical basis of tissue repair. In: FJ, Hunter LY (eds) Rehabilitation of the injured knee. CV Mosby, St. Louis, pp 93–104 Menard D, Stanish WD (1989) The aging athlete. Am J Sports Med 17(2):187–196 ascertaining any property, especially when conducting parametric Gray H (2000) Anatomy of the human body. Lea & Febiger, Philadelphia, Bartleby.com, 2000. Fung YC et al (eds) (1972) Biomechanics: its foundations and objectives. Ahmad Wani. Prentice Prentice-Hall, useful discussions. Technical support for this work through a grant from the construction Research India is gratefully acknowledged. Gallagher RH et al (eds) (1982) Finite elements in biomechanics. Wiley, New York Hoffman AS, Schoen FJ, Lemons JE (eds) (1996) Biomaterials science: an introduction @ IJTSRD | Available Online @ www.ijtsrd.com www.ijtsrd.com | Volume – 3 | Issue – 1 | Nov-Dec 2018 Dec 2018 Page: 495

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