CAJ | 학술논문

选取透明有机玻璃（PMMA）板条和半透明聚苯乙烯（PS）板条试样搭接后进行了激光焊接，按照目前常用的两种塑料焊接强度测试方法在万能材料试验机上试验观测，对观测结果的测量和分析证明：第一种塑料焊接强度测试方法（两块板条搭接未做贴附补偿）会因为附加力矩的作用改变焊接面受力状态，第二种塑料焊接强度测试方法（两块板条搭接做贴附补偿）仍然会产生附加力矩，贴附补偿不能保证焊接面受力状态回归到纯剪切状态，最后讨论了附加力矩所带来偏转角大小的主要影响因素。
선취투명유궤파리（PMMA）판조화반투명취분을희（PS）판조시양탑접후진행료격광한접，안조목전상용적량충소료한접강도측시방법재만능재료시험궤상시험관측，대관측결과적측량화분석증명：제일충소료한접강도측시방법（량괴판조탑접미주첩부보상）회인위부가력구적작용개변한접면수력상태，제이충소료한접강도측시방법（량괴판조탑접주첩부보상）잉연회산생부가력구，첩부보상불능보증한접면수력상태회귀도순전절상태，최후토론료부가력구소대래편전각대소적주요영향인소。
Polymethyl methacrylate (PMMA)transparent plaque and polystyrene (PS)semitransparent plaque were jointed together by laser welding,and the tensile shear strength of the resultant samples were examined by two widely accepted testing methods,simple-lap method without additional joint and simple-lap method with additional joint.The comparative testing results show that simple-lap joint method without additional joint can not keep the stress at vertical definition to the plaque surface during testing,and the simple-lap method with additional joint also fails in shielding the specimens from tensile stress during testing,due to the existence of additional bending moments.It implies that the additional lap joint at the fixture block is not successful in providing pure shearing stress condition for the plaques. And the main factors of the deflection distortion angle ()caused by additional bending moments are also discussed.