某海底输油管道环焊缝断裂。
失效分析结果表明，螺旋焊管焊缝断裂主要是由于管道附近泥浆化趋势、较高的堆土以及焊缝缺陷造成。
The results showed that the failure of spiral welding pipes was mainly caused by piled solid, the increase of the water in solid and th...
材料的断裂韧性可充分满足焊缝细节疲劳抗力的发挥。
The material fracture toughness was adequate to ensure development of the full fatigue resistance of the weld detail.
文章综述了国内外有关螺旋焊缝管的断裂试验和研究工作的概况。
The article is a general review of the test and research work on fracture in relation to spiral welded pipes at home and abroad.
分析了不锈钢压力表管接头焊缝开裂的原因，认为此种开裂具有应力腐蚀开裂、沿晶断裂特征。
The rupture reasons of tube joint weld of the stainless steel pressure meter are analyzed. It is characteristic of stress corrosion cracking and inter granular fracture.
本文简要介绍了热裂化装置反应塔入孔加强板角焊缝的断裂及其补焊情况。
This paper briefs the fractures of fillet weld of manhole reinforcing plate in react ion tower of thermal cracking plant and its repairing welding.
在焊缝超声波探伤中应用断裂力学分析缺陷危害程度，以提高探伤结果的可靠性。
Fracture mechanics has been applied for harmfulness analysis of flaws in ultrasonic testing of welds in order to improve the reliability of testing results.
添粉和不添粉的5A02和5A06铝合金拼焊板的横向拉伸试件均断裂于薄板母材，证明焊缝的强度合格。
The longitudinal tension PM specimen of Tailor Welded Blanks of 5A02 and 5A06 were all fractured on the thinner base metal, which indicated that welds were eligibility.
本文通过对交叉杆扣板直焊缝、端头环焊缝等各部位裂纹的分析，找出了其断裂机理及与疲劳寿命的相关因素。
This article is to confirm the corresponding factors for crack causing and the fatigue life, through an analysis of cracks at fastening plate, welding seams at the end of frame brace.
本文采用概率断裂力学方法和可靠性分析方法，针对压力容器焊接接头的组织不均匀特点，研究了焊缝区疲劳失效概率模型。
The paper studies the fatigue failure probabilistic model of the weld zone in welded joint using probabilistic fracture mechanics and reliabilitistic analysis methods.
在长输管道生产中，由于焊管管端几何形状误差而引起的对接焊缝缺陷是造成应力腐蚀断裂的主要原因之一。
In the long pipeline, because the end surfaces of the welded pipes have the geometrical errors which induce the butt weld defects, the stress corrosion crack will occur.
针对某活塞式发动机排气管断裂现象，从断裂处焊接结构缺陷、焊缝组织缺陷和零件工作环境等方面进行分析。
The fracture failure of the piston engine exhaust pipe was analyzed from welding structure defects, welding structure defects and working environment etc.
某汽车用排气管使用不久焊缝处断裂。
There had been fracture on weld of certain motorcar vent-pipe soon after used.
结果表明，焊缝金属中存在的非金属夹杂物，在低应力作用下形成微裂纹成为裂源，加之焊缝组织中存在大量的MA结构群，从而发生焊缝金属在室温下的解理断裂。
The results showed that nonmetallic inclusions in weld seam served as crack initiation site under external bend load, and large amount of m a structure resulted in cleavage fracture of weld seam.
焊条电弧焊焊缝的断裂韧性与气体保护焊焊缝的断裂韧性相当。
Fracture toughness of both shielded metal arc welding and gas metal arc welding is almost the same.
根据试验测定的焊缝各区冲击韧性、断裂韧性、疲劳裂纹扩展速率和疲劳裂纹扩展门槛值，对焊缝力学性能作出综合评价。
The mechanical properties of the butt welded joints have been evaluated according to the impulsive and fracture toughness as well as the rate and threshold values of fatigue crack propagation.
接头焊缝金属的断裂韧度显著低于母材，而热影响区断裂韧度则介于母材和焊缝金属之间。
The fracture toughness of the weld metal is lower than that of the base metal and the fracture toughness of heat-affected zone (HAZ) is intervenient between those of weld metal and base metal.
通过改变焊缝夏比冲击试样的缺口取向，研究了缺口位向对多层焊缝金属韧性及断裂过程的影响。
By changing the nolch local ion of Charpy impact test specimens studied the effect of nolch location on toughness and cracking process in multi-layer welds.
疲劳试验发现，疲劳试样断裂位置多发生在焊缝处，并对疲劳断口进行了SEM分析。
Fatigue beaked on weld seam more than other places. Fatigue crack initiation occurred inside materials and fatigue fracture was analyzed by SEM.
又算出了这五种形状角焊缝趾端部和焊肉中央处的表面裂纹疲劳断裂的寿命。
The fatigue life of the surface cracks of the weld toe and the central part of the welding bead are calculated.
通过对最近的一次断裂拉杆现场调查和宏观断口分析，发现断裂发生在拉杆的补焊焊缝熔合线附近。
Based on the fracture site investigation and macro-rod fracture analysis, the welding rod fracture occurred in the vicinity of the weld fusion line.
断裂发生在近焊缝处，断裂的特点是沿晶界的。
Rupture occurs near the bond zone. The characteristics of fracture are intergranular.
桥式起重机采用工字形截面作为主梁，使用多年后该结构形式的主梁上翼缘板和腹板连接的主焊缝及母材多处产生裂纹，甚至发生主梁断裂事故。
Cracks occurred in the main weld joining the web and upper wing panel of an overhead crane girder of I-section, some of which have expanded to the structure material and even led to girder fracture.
进一步比较了断裂拉杆和已经产生裂纹的拉杆焊缝区的显微组织，发现在焊缝的热影响区粗晶区存在沿晶裂纹。
The fracture rod has cracks in the microstructure of weld zone, intergranular cracks exists in the coarse grain zone of the weld heat affected zone.
利用扫描电子显微镜和能谱分析(EDS)对焊缝断口进行成分分析，研究焊接接头的焊接缺陷及断裂机制。
Weld fracture components were analysed by SEM and EDS, joint defect and fracture mechanism were also researched.
焊接接头的拉伸试验断裂部位在焊缝。焊接HAZ熔合线附近的硬度值最高，远离熔合线硬度降低，并逐渐接近母材金属的硬度。
The tensile test fracture area locates on weld seam, and the hardness near HAZ fusion line is the highest, away from the fusion line, the hardness declines and reach the parent metal hardness.
中强匹配接头蠕变断裂位置在远离焊缝界面的低强度母材区，呈延性断裂性质。
However, the creep fracture of medium strength match joint, located in the low strength base metal remote from the weld interface, showed a ductile fracture character.
结果表明，在连接杆焊缝附近的热影响区中存在大量针状马氏体组织，在低应力的作用下，导致材料发生脆性断裂。
The result shows that the fracture mode is low stress brittle fracture. The fracture is mainly caused by needle type martensite in the heat affected zone of the weld joint.
对“PU-1”钢和焊缝合金断裂行为的研究结果表明，“PU-1”钻材钢抗H2S应力腐蚀性能和焊接性能较好，应用于结构钢构件具有显著的经济和社会效益。
The results show: drill steel type "PU-1" has good H2S stress corrosion resistant and weldability, which can be used for structures with high economical profit and society significance.
对“PU-1”钢和焊缝合金断裂行为的研究结果表明，“PU-1”钻材钢抗H2S应力腐蚀性能和焊接性能较好，应用于结构钢构件具有显著的经济和社会效益。
The results show: drill steel type "PU-1" has good H2S stress corrosion resistant and weldability, which can be used for structures with high economical profit and society significance.
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