Journal of Materials Science

, Volume 18, Issue 10, pp 3047–3053 | Cite as

Methanol crazing of coarse shear bands in polystyrene

  • C. C. Chau
  • J. C. M. Li
Papers

Abstract

A specimen with coarse shear bands produced at stress concentrations by compression was immersed in methanol to observe craze formation. Thin crazes were initiated at shear bands and joined together while propagating to form thick crazes. Crazes were formed only on the tension side of shear bands with the craze planes perpendicular to the shear bands. When a craze propagated through a shear band, each displaced the other at intersections. Some secondary shear bands were transformed partly into crazes resulting in about a factor of ten increase in thickness. This transformation was achieved by a tensile deformation of fibrous sheets in the shear band with simultaneous production of fine fibres.

Keywords

Polymer Methanol Polystyrene Stress Concentration Shear Band 

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Copyright information

© Chapman and Hall Ltd 1983

Authors and Affiliations

  • C. C. Chau
    • 1
  • J. C. M. Li
    • 1
  1. 1.Department of Mechanical EngineeringUniversity of RochesterRochesterUSA

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