It is well known that a stress concentration of a crack can be relaxed by drilling a hole at the crack tip. The repair method is called a stop drilling procedure and often used to repair aircrafts, machines and so on. Then, when two additional holes are drilled near the stop drilling ...
Allowable operation term after drilling the hole is judged from fatigue crack initiation life at the hole. It is concluded that the crack is to be repair as soon as possible when the factor is over seven and ship sails severe sea zone in winter. 展开 ...
Drilling a hole ahead of crack tip is one of the most common techniques, to prevent further crack propagation in structures subjected to fatigue load. Fatigue cracks are typically occur at locations where drilling a crack stop hole of de... J Vutkuru 被引量: 0发表: 2014年 Numerical Study...
cushion cap of Shouyang Huaihe river Bridge, the followings are studied in the paper as blasting device, drilling method, blasting parameters, design of ... J Fu,H Wang,S Zhou,... - International Seminar on Propellants, Explosives & Pyrotechnics 被引量: 0发表: 2007年 Floor buffer (14) ...
The perfect match of bentonite waterstops and grouting pipes extremely improve the performance of the water-proofing capability. Once the leakage of water occurs, you can plug the crack through pouring chemical grout into the pipe, instead of slotting and drilling a ho...
Test results show that drilling stop hole cannot prevent fatigue crack propagation, but with the other three methods, out-of-plane distortion and stress ... C Wang,X Wei,Y Wang,... - Iabse Conference on Bridges & Structures Sustainability-seeking Intelligent Solutions 被引量: 0发表: 2016年 ...
aHistorical exploration & drilling 历史探险&钻井[translate] a美丽·浪漫·雅致 Beautiful · romantic · refined[translate] atwice sales amount of 2011 正在翻译,请等待...[translate] aAncho de busto 宽胸像[translate] a请将其中的一份快递回来 正在翻译,请等待...[translate] ...
FIG. 3 shows a first step of constructing the present waterstop. Such comprises drilling a hole 18 in straddling relation to the joint 16. This hole is drilled to the desired diameter and to the desired depth such as to a point below the leak or fully down into bedrock 14 if desired,...
a2. Pumping Test: (1) Proposed Drill Rig HD110 is not acceptable, please propose another rig to prevent ground loss during drilling. [translate] aclemson clemson [translate] ahe can even surf and play golf 他可以甚而冲浪和打高尔夫球 [translate] ano tengo correo electronico de paypal 我没有...
from damage by pins until beaks and good small cams were invented. Why would anyone want to clip their way up a time bomb head ladder when you can use ones brain and place gear. I think I agree that on the free routes bolts are better than placements that will blow out a crack. ...