1 / 12

Failure Analysis of a Conveyor Drive Shaft

Failure Analysis of a Conveyor Drive Shaft . Intro. A German-made steel coal-conveyor drive shaft was submitted for root-cause failure analysis. The shaft had cracked in service. Chemical Analysis . Visual Examination . Conclusion & recommend. Tensile Property.

aspen
Download Presentation

Failure Analysis of a Conveyor Drive Shaft

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. Failure Analysis of a Conveyor Drive Shaft

  2. Intro A German-made steel coal-conveyor drive shaft was submitted for root-cause failure analysis. The shaft had cracked in service.

  3. Chemical Analysis Visual Examination Conclusion & recommend Tensile Property Metallographic Impact Property Rockwell Hardness

  4. Visual Examination

  5. Chemical Analysis

  6. Tensile Property Testing

  7. Rockwell Hardness Survey

  8. Impact Property Testing

  9. Metallographic Examination Transverse cross sections through each corner of the keyway were prepared for metallographic examination. Secondary cracks were also found at the exterior surface adjacent to the intersection of the keyway and the exterior surface. The surfaces of the shaft were rough in texture because of corrosion.

  10. Conclusion The conveyor drive shaft failed as a result of corrosion fatigue in bending. Failure was initiated at both corners of the keyway. Numerous secondary fatigue cracks were observed and indicate the presence of a large number of stress concentration sites caused by corrosion pitting of the surface.

  11. recommend • The shaft conformed to the specified chemical and tensile properties for the material. • - The use of protective coatings or shielding the shaft from the corrosive environment should prolong the service life of the drive shaft.

  12. Thank you for your attention.

More Related