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Crack growth rate test 裂纹发展速度试验
The flaking do increases and undulates the fatigue crack growth rate. 钢中的白点能增加疲劳扩展速率并使扩展速率发生波动。
The fatigue crack growth rate has been investigated for SS400 and its welded joint based on the ASTM E647-83 specification. In the test the compact tension (CT) specimens were used. 笔者参照美国材料试验学会标准ASTME647 83的规定,采用紧凑拉伸CT试件对SS400钢及其焊接接头CT试件的疲劳裂纹扩展速率进行了测试。
The fatigue crack growth rate (FCGR) of 4130X steel in H2S environment is researched in this paper. 研究了4130X钢在硫化氢(H2S)腐蚀介质中的疲劳裂纹扩展速率da/dN。
The fatigue crack growth rate is the core for predicting fatigue life by use of fatigue crack propagation(FCP) theory. 疲劳裂纹扩展率表达式是采用疲劳裂纹扩展理论预报疲劳寿命的核心。
Test System of Low-Cycle Fatigue Crack Growth Rate 低周疲劳裂纹扩展速率的试验系统
As an important designing and indicating target of damage tolerance, the fatigue crack growth rate (FCGR) should be necessarily studied. 裂纹扩展速率作为损伤容限设计一个重要指标,以及表征材料损伤容限性能的重要方面,有必要对其开展较为深入的研究。
Cell growth rate test and hemolysis test were conducted to investigate the cytotoxicity and hemolysis reaction for skin reproducing membrane. 其方法是采用细胞增殖度试验和溶血试验,对医用丝素蛋白皮肤再生膜进行细胞毒性和溶血反应的实验研究。
Microstructural effects in small crack growth and analytical description of small crack growth rate are emphatically analyzed. 着重对疲劳小裂纹扩展的微观机制、解析描述进行了分析和讨论;
Abstract The fatigue crack growth rate is the core for assessing fatigue growth life by use of fatigue crack propagation (FCP) theory. 摘要疲劳裂纹扩展速率表达式是采用疲劳裂纹扩展理论评估疲劳裂纹扩展寿命的核心。
And it is concluded that the crack propagates slowly under a negative applied electric field, whereas the crack growth rate is enhanced under a positive applied electric field. 从理论上得到与实验结果相一致的结论：负电场阻碍裂纹的扩展而正电场促进裂纹的扩展。
By comparing with the teat results of crack growth rate, the prediction capability of the time series analysis method for crack growth behavior pattern was verified. 与曲轴疲劳裂纹扩展速率曲线进行对比，结果表明时序方法对裂纹扩展模式具有一定的预测能力。
The EPR value can be treated as a qualitative indicator to evaluate the crack growth rate of proton irradiated SS304 with different prior thermal treatments. 不同前热处理之辐照304SS，其EPR值可作为评估裂缝成长速率的定性指标。
The toxicity of 6 kinds of organic fungicides, Carbendazim, Thiophanatemethy WP, Inprodione, Triadimefon, Mancozeb and Thiram was measured against Macrophoma Kawatsukaii by mycelium growth rate test. 摘要采用生长速率法进行多菌灵、甲基托布津、扑海因、三唑酮、代森锰锌、福美双6种药剂对轮纹病菌的毒力测定。
The fatigue crack growth rate (FCGR) of 08PVXt, 16Mn, 440C and 4340 steels in distilled water anb NaClaqueous solution has been investigated, and the experimental results have been compared with those of corrosion fatigue in the literature. 本文对16Mn、08PVXt、440C和4340钢在蒸馏水和3.;5%25NaCl水溶液中的疲劳裂纹扩展速率(FCGR)进行了实验研究;并与一些钢在同类介质中的腐蚀疲劳(CF)实验结果进行了对比。
Two series of fatigue crack growth rate (FCGR) tests using three point bend specimen with different integral knife edge designs are performed. Effect of elastic modulus on the measurement of fatigue crack length using compliance technique is analyzed. 用不同整体刀口设计的三点弯曲SE(B)试样做了两组疲劳裂纹扩展速率 (FCGR)试验 ,分析了弹性模量在柔度法测量疲劳裂纹长度中的影响。
Crack growth rate is an important parameter for engineering fracture failure estimation,and fractographic retroestimation is one of practical methods for measuring crack growth rate. 裂纹扩展速率是工程断裂失效预测分析的基础,采用断口定量测量裂纹扩展速率是常用的实用方法之一。
Abstract This paper studies the fatigue crack growth rate of GDL-1 bainite steel with high strength and toughness in different heat treatment conditions by fatigue crack propagation tests. 摘要通过疲劳裂纹扩展试验，研究了不同热处理状态下GDL-1型高强韧贝氏体钢的疲劳裂纹扩展速率和疲劳裂纹扩展门槛值，得出了有价值有意义的结论。
The crack growth rate without the influence of crack surface contact was determined by extrapolating the relationship between the crack growth rate and the crack extension to the zero crack length. 通过外插裂纹扩展速率与裂纹长度之间的关系, 可近似得到裂纹长度为零时无裂纹面滑移接触影响的裂纹扩展速率。
The results show that the base structures of vermicular graphite cast iron specimen affect markedly the threshold value and crack growth rate of within low speed growth rate region. 其结果表明,不同的基体组织对蠕墨铸铁的门槛值和低速区的裂纹扩展速率有比较明显的影响,门槛值随相对韧度增大而增大。