The qualitative study mainly includes experimental researches on influencing factors of wear resistance, failure types and mechanisms of the wear of the material and contact analysis.
定性研究主要是对该材料耐磨损性能的影响因素、磨损失效形式、磨损机理进行试验研究和接触分析。
Analysis shows that strain softening of the material causes progressive failure and affects the load carrying capacity of the structures.
分析结果表明，由于岩土类材料的应变软化性质，结构呈现渐进破坏，且承载特性与材料的软化程度有关。
By material and crystal analysis of the swollen and cracked pyrolysis furnace tubes, summarizes reasons for the failure of the tubes, and proposes preventive measures.
通过对其鼓包及开裂的裂解炉炉管进行材质和晶相组织分析，找出了炉管故障发生的原因，并提出了具体的预防措施。
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