scholarly journals Impact of Air Distribution on Efficiency of Dust Capture from Metal Grinding ―Bench Test Method

2011 ◽  
Vol 49 (6) ◽  
pp. 735-745 ◽  
Author(s):  
Tomasz JANKOWSKI
1999 ◽  
Author(s):  
Martin Megnin ◽  
Beth Evans ◽  
Don Koehler ◽  
Karen Kohl ◽  
John Naylon

2021 ◽  
pp. 20-29
Author(s):  
V.S. Vanaev

An overview of the principal schemes and designs of testing tools for handheld impact machines, such as riveting hammers, is given. The formation of a bench test method for riveting hammers is considered, which most objectively reproduces the real work of a manual machine when processing an object with a riveting hammer, including with the help of support. Keywords: hand-held machine, riveting hammer, support, test bench, test procedure, processed package, rivet, characteristics of hand-held machine. [email protected]


2010 ◽  
Vol 34-35 ◽  
pp. 595-599
Author(s):  
Nan Cong ◽  
Xun Chen ◽  
Jian Zhong Shang ◽  
Ke Shan Liang

Non-Structural road driving test is a key part of fatigue and durability tests for vehicles such as the construction machines and ATVs. Combining a theoretic road-tyre dynamic model with some real vehicle design parameters, the responses of the wheel axle under different non-structural road conditions were estimated conveniently. The responses can be taken as inputs for a virtual test-rig simulation, and the responses of every part on the test object are obtained separately. Fatigue life is predicted under the finite element circumstance, and the reliability and durability are concluded. Comparing with the real road-driving test, the virtual fatigue test method above can significantly reduce the test period. This method is used to predict the fatigue life of the rear axle-housing in construction machines, the accuracy of the method is verified by a corresponding real bench test.


2021 ◽  
Vol 35 (1) ◽  
pp. 150-155
Author(s):  
Jong-Jin Jung

In this study, the validity of an indoor bench test to replace and overcome the limitations of the real-range test, an infrared flame detector sensitivity test, was analyzed. A micro burner (diameter 6 mm) was used to substitute for the infrared flame detector. In order to measure the amount of light by distance, the voltage at the output end of the IR sensor was acquired. In addition, normal heptane (n-heptane) was used as a fuel for the actual distance experiment, and the amount of light at each distance was measured using an IR sensor. A bench tester was developed to measure the light output characteristics of infrared flame detectors by distance inside, and the actual distance optical characteristics from outside were measured and compared. As a result, both methods were able to confirm the same optical characteristics by distance. This study confirmed the validity of the bench test method conducted inside, which can replace the experiment at the actual distance conducted to confirm the performance of the infrared flame detector. If this test method is used in the future, it is believed the flame detector will improve product quality and development.


2021 ◽  
pp. 14-19
Author(s):  
V.S. Vanaev

An overview of the principal schemes and designs of test tools for hand-held impact machines, such as chipping hammers, is presented. The formation of a bench test method for chipping hammers is considered, which most objectively reproduces the operation of a hand-held machine from the position of its location relative to the object being processed. Keywords: hand-held machine, chipping hammer, test bench, test method, processed object, technological characteristics. [email protected]


2019 ◽  
Vol 135 ◽  
pp. 02002
Author(s):  
Victor Kochergin ◽  
Igor Maksimov ◽  
Victor Pevzner ◽  
Evgeniya Polunina

Rail fasteners loading and its influence on the track deformability under modern maintenance conditions with increased cars axle loads is observed. The difference between oneand two-point wheelrail contact loading scheme is shown. The authors present the analysis of domestic and foreign methods of pads bench tests and show the necessity of carrying out tests imitating real (two-point contact) loading of pads. The bench test method for researching fastener loading and pad strain characteristics in a wide range of vertical and lateral loads under two-point contact scheme based on a number of field tests is presented. The results of static tests and following dynamic ones with cycling loading, which were carried out on a two-sleepers bench, are observed. Bench tests carried out by VNIIZHT and the analysis of the cyclic test methods showed the importance of fasteners tests with a real loading simulation making it possible to explain the causes of track gauge widening and decrease of track inclination, which considerably influences track stability and wear of the track and rolling stock.


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