您要查找的是不是:
- STUDY ON FATIGUE CRACK INITIATION SITE OF NOTCHED TUBULAR SPECIMEN UNDER BIAXIAL LOADING 双轴加载下缺口疲劳裂纹萌生位置的研究
- fatigue crack initiation site 疲劳源
- "Wedging effect" of corrosion byproducts was analyzed by using 3-D finite element method, and the site of possible fatigue crack initiation was identified. 利用三维有限元法分析腐蚀产物的“楔入效应”,得到最大主应力点的位置,是可能的起裂点。
- The fractography of the fatigue crack initiation displayed cleavage f... 裂纹形成的断裂为穿晶解理机制,预应变可导致更多的二次裂纹。
- The threshold of the fatigue crack initiation from the notch of the microbeam is close to that of the bulk material. 疲劳裂纹从尖缺口处萌生的门槛值接近块体材料。
- Fractography analyses with scanning electron microscopy (SEM) were conducted to investigate the corrosion fatigue crack initiation mechanism. 此外,亦利用扫描式电子显微镜(SEM)观察破断面,以了解疲劳破坏机制。
- Experiments demonstrate that leaf spring crack results from rust spot as fatigue crack initiation,and in order to improve spring life it must be to improve coating quality. 通过试验证明了锈点是导致钢板弹簧断裂的新的疲劳源,为提高弹簧的使用寿命必须提高其涂层质量。
- The pre-straining prolonged the fatigue crack initiation life, and increased resistance coefficient and equivalent stress threshold of the fatigue crack initiation. 预应变可以延长疲劳裂纹形成寿命,提高疲劳裂纹形成的抗力系数和裂纹形成的当量应力门槛值;
- The U-notch specimens were used to investigate the fatigue crack initiation life of X60 pipeline steel after pre-tension straining with ductile deformation of 5%, 10% and 15%. 摘要采用U型缺口试样研究了X60管线钢经5%25、10%25和15%25的预拉伸应变后的疲劳裂纹形成寿命。
- The pre-straining prolonged the fatigue crack initiation life,and increased resistance coefficient and equivalent stress threshold of the fatigue crack initiation. 预应变可以延长疲劳裂纹形成寿命,提高疲劳裂纹形成的抗力系数和裂纹形成的当量应力门槛值;
- Thermal fatigue crack initiation and propagation paths of the high-chromi-um, middle Ni-Cr, adamite(165CrNiM.) and 9Cr2 (the forged steel) rollmaterials have been investigated. Thermal fatigue resistance of the four mater-ials has been evaluated. 本文研究高Cr铸铁、中Ni-Cr激冷铸铁、半钢(165CrNiMo)及锻钢(9Cr2)四种热轧辊材料的热裂纹萌生特点和扩展途径,并对四种材料热疲劳抗力进行了评价。
- Fractograph and microstructure analyses with scanning electron microscoy (SEM) and optical microscoy (OM) were conducted to determine the corrosion fatigue crack initiation and propagation mode. 此外,亦利用光学显微镜(OM)和扫描式电子显微镜(SEM),对金相组织与破断面加以观察分析,以瞭解裂缝的生成及成长模式。
- The fracture of the fatigue samples was examined by SEM and the fatigue crack initiation and propagation mechanism was presented.The inclusions in the fracture were checked by EDX. EDX能谱分析发现断口中的夹杂物主要为铁的氧化物和高硅颗粒,并在疲劳过程中被剥离。
- For the notched specimens, there are multiple crack initiation sites on the fractography. 瞬断区所承受的断裂应力随循环应力升高而降低;
- The fractography of the fatigue crack initiation displayed cleavage facet and more second cracks after pre-training. 裂纹形成的断裂为穿晶解理机制,预应变可导致更多的二次裂纹。
- The observations of fracture surface under SEM found that fatigue cracks initiation area exists mostly in surface and in subsurface. 扫描电子显微镜分析发现,疲劳裂纹源的位置主要呈现为表层和次表层两种情况。
- During the process of fracture toughness test of 7150 alloy extrusion,the prior fatigue crack initiated and propagated inhomogeneously. 在准备7150合金平面应变断裂韧性试样的过程中,预制疲劳裂纹发生不均匀扩展。
- fatigue crack initiation and propagation 疲劳裂纹萌生及扩展
- In service, fatigue cracking initiated at the plating runout led to lug fracture. 在实际使用中,在镀层的过渡段发生的疲劳裂纹会导致接耳断裂。
- Analysis of Fatigue Crack Initiation Life of Submarine Structure 潜艇结构疲劳裂纹形成寿命的分析