F - fractography 中文 - EN166

fractography n.金屬斷面顯微鏡觀察。adj.-phic

fracturation
The relative density of the sample has reached as high as 97 . 4 % of fully dense . the mean micro hardness has reached hv496 . 3 . the fractography of the fracture section of the tensile sample was characteristic of dimple typically which indicated that the fracture belong to ductile fracture ；試樣相對密度可以達到理論值的97 . 4 ；硬度方面由于激光立體成形工藝的特點，最后幾層的硬度比開始時的高，平均硬度達到了hv496 . 3 ；拉伸試樣的斷口形貌具有典型的韌窩特征，屬于延性斷裂。
Experimental results indicate that : the ae characters of single bundle , 2 - d woven and 3 - d braided c / sic composite are different because of their different structures , damage mechanisms and developing progress , which can be verified by micrographic examination on specimens “ initial state and fractography 實驗研究表明：單纖維束、二維編織和三維編織c sic復合材料由于結構形式不同，損傷機理和發展過程不同，表現出的聲發射參量的特性也不同；試件初始狀態和斷口的顯微觀察證實了該推斷。
: 36 < kth < 37 mpa / m3 / 2 , 42 < kih < 44mpa / m3 / 2 , 51 < kc < 52 mpa / m3 / 2 through the sem fractography , it is know that the susceptibility to brittle failure at room temperature is more than below 100 ? . and the susceptibility to brittle failure increase with hydrogen increasing , under the sustained loading , ductile cracking appears . the quantity of brittle cracking is more with crack growth T44mpa m ‘ q ， sl lt52mpa in ’ ”斷口分析表明，該合金充氫后其室溫時的氫脆敏感性大于100oc時的氫脆敏感性；且隨氫含量升高，氫脆敏感性增加：在恒載荷的作用下，該合金裂二紋開始擴展時顯示的是韌性起裂；隨裂紋增長，試樣脆性斷裂的比例增大。
From macroscopical to microcosmic , from qualitative to quantitative , from fracture surface analysis in fracture failure to fractography about mechanism , it stated position and function of fracture surface analysis in fracture failure analysis and introduced the contents , evidence , fundamental skills and methods of fracture surface analysis and emphasized the development of fractography and the research on fracture micromechanism 摘要從宏觀到微觀、從定性到定量、從斷裂失效的斷口分析到機理研究的斷口學，闡述斷口分析在斷裂失效（事故）分析中的地位和作用，介紹斷口分析的內容及其依據、基本技能和方法，著重說明斷口學的發展和微觀斷裂機理的研究。
The tensile strength and young ’ s modulus of cf / ep specimens before and after vacuum thermo - cycling were measured by an electrical universal material testing machine . an electron scanning microscope was used to perform the surface morphology and fractography of specimens 真空熱循環試驗前后cf / ep層合材料的拉伸性能由電子萬能材料試驗機完成,本文利用掃描電鏡觀測試樣表面形貌和拉伸后的斷口形貌。
By means of chemical composition analysis , hardness testing , non - metallic inclusion examination , metallographic examination , macro and micro - fractography fracture analysis were conducted 對剃齒刀斷口進行了宏、微觀檢驗、化學成分分析、硬度測試和非金屬夾雜物及顯微組織檢驗。
Fracture analysis of those bolts was conducted by means of macro examination , fractography and chemical composition analysis 采用宏、微觀檢驗和化學成分分析等方法對失效件進行了檢測。
Standard practice for fractography and characterization of fracture origins in advanced ceramics 高級陶瓷中斷裂處的斷口組織照片和表征的標準規程
Welding fractography analysis 焊接金相分析
Keywords : fractography , brittle material , failure mode , model rock 關鍵詞：裂形學、脆性材料、破裂模式、人工巖石。