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- macroscoic fractography 宏观断口分析
- Keywords: fractography, brittle material, failure mode, model rock. 关键词：裂形学、脆性材料、破裂模式、人工岩石。
- 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。
- Fractography of the quenched tensile specimen under cycling treatment changes from dimple pattern to mixed fracture with dimple and tear ridges. 循环温度场作用下淬火态合金拉伸试样断口由韧窝型断裂向韧窝和撕裂棱混合型断裂转变。
- The fractography of this steel changes from dimple fracture into cleavage fracture and inter-granular rapture. 该不锈钢的夏氏V型缺口(CharpyV-notch)冲击试样断口形貌随着时效时间的延长由韧窝断裂为主向准解理断裂和沿晶断裂为主变化。
- The fractography showed brittle fracture in high SiC layer and dimple fracture in the matrix of low SiC layer. 第5章研究了多层梯度复合材料的疲劳裂纹扩展行为。 研究表明，当疲劳裂纹从低SIC层向高SIC层扩展时，在相邻两层过渡区会发生裂纹扩展延滞。
- The bending fatigue properties and fractography of normalized tufftrided 45 steel were analyzed. 对45钢正火态软氮化处理前后的旋转弯曲疲劳性能及其断口进行了定量和电镜分析。
- The fracture failure reasons of the hand-gear were analyzed by means of stress situation and fractography. 通过研究断裂时的应力状况及宏观断口,对手动小齿轮断裂失效原因进行了分析。
- At present, the knowledge of fractography of composite materials is growing and paid much attention. 目前，有关复合材料断裂图像的知识仍是有限的，但已引起人们的高度重视。
- 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 reveals that the alloy has high ductility because the dendritic phases produce in the alloy. 合金的断口分析结果表明, 由于产生了塑性枝晶相, 因此该合金具有较高塑性。
- 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。
- In this paper, ultrasonic fractography method is used to test several types of PMMA specimens. 本文利用超声波断口图技术对不同类型的PMMA试件进行了测试。
- The fractography of this alloy is changed from dimple fracture into cleavage fracture and inter-granular rapture with the extension of aging time. 另外,该不锈钢的CVN冲击试样断口形貌随着时效时间的延长由韧性断裂机制的韧窝断裂为主向脆性断裂机制的准解理断裂和穿晶断裂为主变化。
- The achievement of fractography for metallic materials promoted the diagnosis for mechanical failure and the improvement of product quality. 金属材料断口学得到了充分的发展和完善，促进了机械产品失效的分析诊断和产品内在本质的改善；
- Fractography analyses with scanning electronic microscopy (SEM) were conducted to determine fatigue fracture mechanisms of these two lead-free solders. 此外，亦利用扫描式电子显微镜(SEM)观察表面裂缝与疲劳破断面，以了解此两款无铅焊锡之疲劳破裂机制。
- Fracture analysis of those bolts was conducted by means of macro examination, fractography and chemical composition analysis. 采用宏、微观检验和化学成分分析等方法对失效件进行了检测。
- It is found that traveling block hook was brittle fracture and crack originated from original flaw per Macro fractography and micro fractography. 对游车大钩断裂事故进行了调查研究,对其断口形貌进行了宏观和微观分析,发现游车大钩为脆性断裂,断口起源于原始缺陷。
- The fracture reasons of the transmission shaft were analyzed by means of chemical analysis,mechanical test,fractography and metallography examination. 通过检测化学成分、力学性能、宏观断口以及金相组织等方法对传动轴断裂原因进行了分析。
- 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。
