设计并加工了孔类和槽类模拟缺陷及实际焊接试件。
Hole-type and trough-type simulation of defects and the actual welding specimens are Designed and processed.
在焊接试件中有显著的裂纹闭合现象，其原因是焊接残余应力的作用。
There is significant closure in welded specimen due to the effect of welding residual stress.
在数控真空钎焊炉中进行钎焊试验，由于施加压力的不同，得出钎缝厚度不同的焊接试件。
The brazing experiment is finished in vacuum furnace, the brazed joints with different filler metal thickness are obtained by different pressure on them.
研究了试件表面处理状态、保护气体、激光输出功率、焊接速度、激光脉冲频率等工艺参数对焊接质量的影响规律。
The influence of the parameters such as surface treatment state, laser output power, welding speed, protective atmosphere, and pulse frequency on the welding quality was studied.
此试件应使用与原始试验相同的焊接参数进行焊接，并且仅对焊接金属冲击试样进行试验。
This test piece shall be welded using the identical welding parameters as the original test and only weld metal impact test specimens shall be tested.
对所测试件选取适当的模型，应用弹性力学理论，推导出微小位移与焊接残余应力的关系式。
On the basis of model selection from the pieces tested and according to elastic mechanics, the relation between minute displacement and welding residual stress is deduced.
试件的焊接和试验应由检验员或检验团体证实。
Welding and testing of the test pieces shall be witnessed by an examiner or an examining body.
当焊接附加试件时，允许将专用类型的焊料改为另一种具有相同规定部分的焊料。
It is permissible to change the specific make of filler material to another with the same compulsory part of the designation when an additional test piece is welded.
如果试件不符合7.5规定的外观检查或非破坏性检查的要求，应再取一个试件进行焊接，并进行同样检查。
If the test piece fails to comply with any of the requirements for visual examination or NDT specified in 7.5, one further test piece shall be welded and subjected to the same examination.
当采用冲击要求时，适合的热输入的上限比试件焊接时使用的热输入大25%。
When impact requirements apply, the upper limit of heat input qualified is 25 % greater than that used in welding the test piece.
焊后试件的性能测试结果表明，焊接接头的拉伸强度、断面收缩率、延伸率及冲击韧性均已超过母材。
The results of performance measurement test show that tensile-strength, contraction of cross sectional area, elongation percentage, dynamic ductility of the weld all exceed their base metal.
用超声疲劳试验装置对Q235B母材及焊接接头试件进行超声疲劳试验，研究其在超高周疲劳寿命区间的疲劳性能。
Ultrasonic fatigue tests were carried out on Q235B base metal and welded joints by an ultrasonic fatigue test equipment in order to investigate their super high cycle fatigue properties.
三组试件中最简单的一个节点为除去旧有的开裂焊接材料并用延性好的焊接材料重新焊接。
The simplest of these removes the old (cracked) weld material and replaces it with ductile weld material.
通过考虑材料微观塑性损伤，定量研究了焊接接头中强度匹配、试件几何形状对接头抗延性裂纹扩展行为的影响。
The effects of strength mis-matching and specimen geometry on the resistance behavior to ductile crack growth for welded joint were conducted by 3-D FE analysis considering the micro-plastic damage.
本文以平板网架结构十字板-球节点为研究对象，设计了用于疲劳试验的焊接空心球节点试件。
Based on fatigue test of crossed plate-welded hollow spherical joints of flatbed grid structure, the author has designed welded hollow spherical joints.
无论是焊接热模拟试件还是焊接接头硬度测试均表明HAZ不存在软化问题，接头拉伸试验断在远离热影响区的母材上。
Hardness measurement on welding thermal simulated specimens and cross weld specimens showed that no softening occurred in the HAZ. All the cross weld tensile specimens ruptured in the base metal.
采用厚板试件对焊接过程的三维数值模拟进行了初步研究。
The research of three dimensional numerical simulation of welding process on thick plate has been conducted.
本文报道喷瓷管道试件的焊接试验结果。
This paper provides welding test result of specimen of sprayed porcelain pipe.
当采用硬度要求时，适合的热输入的下限比试件焊接时使用的热输入低25%。
When hardness requirements apply, the lower limit of heat input qualified is 25 % lower than that used in welding the test piece.
与不含焊接缺陷的焊态试件相比，提高疲劳强度32%，提高疲劳寿命2～7倍；
Compared with as-welded specimens with no defects, the fatigue strength has been increased by 32%, and the fatigue life by 2~7 times.
与不含焊接缺陷的焊态试件相比，提高疲劳强度32%，提高疲劳寿命2～7倍；
Compared with as-welded specimens with no defects, the fatigue strength has been increased by 32%, and the fatigue life by 2~7 times.
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