Based on the Plastic Screw Holes Research into the Causes of the Fracture

Plastic cracking is fatal flaw, affect the normal use of the related to many factors. This article selects a typical “screw holes rupture” case analysis, found the cause of broken plastic screw hole for its own material has changed, the new material mechanical strength decreased, intolerance to assembly the external force and fracture. At the same time, material control proposal is presented.