DROP WEIGHT TOWER FOR CRACK INITIATION IN FRACTURE MECHANICS SAMPLES

摘要

The middle fractured material sample that causes of tower (110) drop hammer for fracture mechanics test method in the renewable place of production, including pedestal (120), it is mounted on clamping material sample with specimen holder on top surface (124), attachment column (140) has linear guide (142), and bracket (162) is connected to linear track (142) and platform (164) is connected on bracket. Stage (164) includes the cutting edge of a knife or a sword mouth retainer (178) of vertical bar (184) and a razor blade. Weight is slidably mounted in upright bar (184). The bracket is used to adjust the height of objective table (164) relative to sample of material. Hammer (180) slides up and down the active force of vertical rod (184) application unanimously and a part of repeatable razor (178) then starts cracked material sample.