1 / 4

Fiber Analysis

Fiber Analysis. Tracking the Source. Fiber evidence provides information about where a person has been. Its origin must be narrowed down to one or two sources to be useful in crime scene investigation. (This can be difficult because many clothes, upholstery, and carpets are mass produced.)

rupali
Download Presentation

Fiber Analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Fiber Analysis

  2. Tracking the Source • Fiber evidence provides information about where a person has been. • Its origin must be narrowed down to one or two sources to be useful in crime scene investigation. (This can be difficult because many clothes, upholstery, and carpets are mass produced.) • Fibers are divided into two groups: natural and man-made.

  3. Natural Fibers • Wool • Silk • Cotton • Flax • Since the stone age, people have used these materials to make threads that could be woven into large pieces of cloth. • During the industrial revolution, this process was mechanized to produce mass amounts of fabric.

  4. Man-Made Fibers • Rayon (first man-made fiber) • Today, synthetic fiber is used twice as much as natural fiber in making fabric. • Man-made fibers are generally classified into two groups depending on whether or not they originated from cellulose. • Fibers derived from cellulose include rayon and acetate. • Fibers not derived from cellulose include nylon, polyester, acrylic, and spandex.

More Related