缺口試樣 的英文怎麼說
中文拼音 [quēkǒushìyàng]
缺口試樣
英文
nicked fracture test-
Influence of loading rate on critical event of cleavage fracture in notched specimen of low alloy steel
加載速度對低合金鋼缺口試樣解理斷裂臨界事件的影響In this paper, the high - temperature low - cycle fatigue life and fatigue crack propagation life tests are carried on the cylindrical axial symmetry specimens having precrack or non - precrack with different types of notches of 16mnr steel in common use in the petrochemical industry contacting coke drum equipment, the stress / strain and the range of stress / strain of dangerous points are received through stress analysis of the specimens using finite element program under multi - axial stress state. at last, the equations of evaluating the high - temperature low - cycle fatigue life and the fatigue crack propagation life are found through using the least - square regression method
本文採用無預裂紋和帶預裂紋環狀缺口圓柱形試樣，進行了石化焦炭塔設備常用材料16mnr多維應力狀態下不同缺口形式的高溫低周疲勞總壽命試驗及裂紋擴展壽命試驗，並利用有限元程序對試樣缺口周圍及裂紋尖端附近進行了軸對稱多維應力狀態下的應力、應變場分析，來評價材料不同條件下的高溫低周疲勞總壽命和裂紋擴展壽命，最後利用最小二乘回歸方法，得到了該材料高溫低周疲勞總壽命和裂紋擴展壽命評價方程。By analyzing the part and fracture characteristic of sample, find the reason for this flaw is the choice of welding technology parameter is illogical ; welders don ' t grasp well the fibrin electrode ' s characteristics which distinguish with other low hydrogen electrodes, and usage isn ' t reasonable or operation isn ' t skilled
通過分析試樣的取樣部位和刻槽錘斷試樣斷口的特點，發現產生缺陷的原因是焊接工藝參數選擇不合理；焊工未能很好地掌握纖維素焊條與其他低氫型焊條相區別的特性，運條不合理或操作手法不熟練。Aerospace series ; hydrogen embrittlement of steels ; notched specimen test ; german version en 2832 : 1993
航空航天.鋼的氫脆性.缺口試樣試驗The oscillation of fatigue factors have much effect on small strain amplitude fatigue life, and the less the strain amplitude, the less the effect. as for notched specimen, the fatigue life prediction using fatigue factors of half - life section is the smallest
5時，採用7 10壽命階段的疲勞特性參數預測結果與實測值的一致性更好；對于缺口疲勞試樣，則採用半壽命階段的疲勞參數的預測結果為最小。The ratios of charpy impact value of small size specimen to that of the standard are studied by using the series charpy v - notch impact test method and the question how to select equivalent ratio of the charpy impact quota of non standard sample is also discussed
通過夏比v型缺口沖擊試驗，研究了結構鋼小尺寸試樣的沖擊功與標準試樣沖擊功的比值在系列溫度沖擊試驗中的變化規律，並述評了用等效比值數確定小尺寸試樣沖擊功指標的問題。This paper sets about studying room - temperature fracture mechanisms of tial - based alloys of fully lamellar and duplex microstructures through the measurements of mechanical properties, in - situ observations of fracture surfaces and finite element method ( fem ) calculations, the measurement of macro - parameters, the observations of fracture surface and fem calculations on notch specimens ( 4pb ) and pre - crack specimens ( 3pb ), detailed observations of configuration changes at pre - crack tips in metallographic cross sections of specimens unloaded at various applied loads and fem calculation
本文通過光滑試件機械性能的測定，原位拉伸試件的表面觀察、相應的斷口觀察及有限元計算；缺口彎曲宏觀參數的測定、斷口觀察及其有限元計算；裂紋彎曲參數的測定、裂紋卸載試樣剖面的觀察及其有限元模擬與計算研究了tial基合金全層組織和雙態組織的室溫斷裂機理。分享友人