Determination method of residual styrene monomer contents in reinforced plastics based on unsaturated polyester 不饱和聚酯树酯增强塑料中残留苯乙烯单体含量测定方法
The results show the failure analysis base on gmc is feasible . the paper introduces the analysis method of residual stress of composite structures 阐述了复合材料残余应力分析方法,并与gmc模型结合,分析了残余应力对复合材料强度的影响。
1 . the measurement method of residual stress distribution in thick aluminum alloy plate is studied . aiming at the difficult problem to measure residual stress distribution in thick plate , a new method is proposed - - modified layer removal method , based on existed measurement theories and according to the characteristics of thick pre - stretched aluminum alloy plate 本文所完成的主要工作如下: 1 、铝合金预拉伸厚板内部残余应力的测试方法研究针对厚板内部残余应力测试这一技术难题,在现有测试技术研究的基础上,结合铝合金厚板的特点,提出了一种新的测试方法? ?改进剥层法。
By combining with an engineering practice , the failure pattern , the procedure and the method of failure analysis , the influential factors of service life and the methods of residual life predication of the main steam pipe are investigated systematically in the dissertation . so preventing accident and decreasing damage can be reached 本文作者结合工程实例,对主蒸汽管道的失效模式、影响运行寿命的主要因素以及寿命预测的方法进行了较为系统的分析,为发电厂主蒸汽管道的寿命管理提供了理论依据和分析方法,以达到预防和降低事故、减少损失的目的。