Results 11 to 17 of about 19 (17)

The use of point-impact techniques in stone processing (pecking) in the sites of forest Trans-Urals [PDF]

Вестник археологии, антропологии и этнографии
For processing of stone and manufacture of tools, ancient man mastered a variety of methods and techniques — beating, splitting into flakes and plates, impact and spin retouching, grinding, sawing, drilling and some others.
Serikov Yu.B.
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Estimation of monitoring image in laser blind via-hole drilling process of printed wiring boards with a high speed video camera and temperature visualization from obtained image by two-color method

Nihon Kikai Gakkai ronbunshu, 2019
In the present report, we attempted to construct a useful monitoring method to control laser via-hole drilling process of multi-layer printed wiring boards with a high speed video camera.Cu direct laser drilling was performed for the FR-4 type insulation
Toshiki HIROGAKI, Eiichi AOYAMA, Kouji KANKI, Ryouta YAMAGUCHI   +3 more
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Using Iterative Correction to Improve the Accuracy of the Blind-Hole Welding Residual Stress Test

Sensors
An iterative correction method for the stress release coefficient, leveraging numerical simulation, has been innovatively developed to address the significant error issues associated with the blind-hole method in high-stress residual stress testing of ...
Jiangning Pei, Shengbao Wang, Songlin Qin, Zhijia Yu, Jianzhong Gao, Jichen Xiao, Zhonglong Li   +6 more
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Real-Time Lithology Prediction at the Bit Using Machine Learning

Geosciences
Real-time drilling analysis requires knowledge of lithology at the drill bit. However, logging-while-drilling (LWD) sensors in the bottom hole assembly (BHA) are usually positioned 2–50 m (7–164 ft) above the bit (called the sensor offset), leading to a ...
Tunc Burak, Ashutosh Sharma, Espen Hoel, Tron Golder Kristiansen, Morten Welmer, Runar Nygaard   +5 more
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基于盲孔法的齿轮残余应力的测试研究

Jixie chuandong, 2010
In order to know the residual stress distribution of gears,blind hole-drilling method associated with electronic resistance gage method is used,and gears residual stress after induct quench is measured.The results show that the residual stress distribute
米红林
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Effect of Laser Power on Residual Stress in Bottom-Locking Welded Joints Between TC4 and TA18 Titanium Alloys: Numerical Modeling and Experiments

Metals
In aerospace manufacturing, laser welding of TC4/TA18 dissimilar titanium alloys in bottom-locking configurations is essential for lightweight design, yet the residual stress behavior of such joints remains insufficiently understood.
Ming Cao, Denggao Liu, Xiangyu Zhou, Wenqin Wang, Yanjun Wang, Chaohua Zhang, Xianfeng Xiao   +6 more
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The influence of heat treatment by annealing on clad plates residual stresses

Metalurgija, 2011
The influence of applied clad procedure as well as heat treatment by annealing (650 °C/2h) on level and nature of residual stresses was researched. Three clad procedures are used i.e.
B. Mateša, D. Kozak, A. Stoić, I. Samardžić   +3 more
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