< br> processing. Clamp for the direct tensile fatigue test. ② gripping parts of the package copper. In order to eliminate the impact of the central support indentation, gripping parts of the package in the sample of copper as a protection cover. And then tensile fatigue test. ③ cast aluminum as a central part of the media who filled the void space between the transverse ribs, the central holding parts of the surface to maintain geometric continuity. At the same time increase the sample gripping parts of the cross-sectional area, and then tensile fatigue test. ④ central holding area surfacing. Taking into account the performance of aluminum and raw material differences, could not be combined into an organic whole. Was chosen surfacing method, gripping parts of raw materials combined into one, enhanced gripping parts, then tensile fatigue test. ⑤ deformation strengthening the central holding area. Strain hardening of the method with transverse ribs flatten, eliminating the gripping part of the surface of discontinuity, then tensile fatigue test. ⑥ worn parts of the central holding transverse ribs. Stress concentration and should be worn moment of transverse ribs, and hot rolled to retain the original surface of the longitudinal ribs (see Figure 2),mulberry oslo, and then the tensile fatigue test. 4 The results support both the Central l freely mix water with clay Dan worn around the 2 central parts of the cross to help hold the sample diagram of the sample treated by several different tensile fatigue test. Been shown in Table 3 test results. Table 3 shows that, without treatment directly to the central holding of hot water-cooled steel, testing can not be, all failed; gripping parts of the copper surface protection packages also have little effect; cast aluminum parts processing to ensure that the clamping surface of the geometric continuity,franklin marshall, but aluminum and raw material properties vary widely. Aluminum only played a role in protective sleeve. Can not be combined with the raw materials into an organic whole: welding the parts together to form an organic whole grip,ed hardy suomessa, and strengthen the central holding area. However, due to the weld root resorption of the material matrix. So that premature fracture in the weld area: although the strain hardening clamping parts clamping parts to ensure the continuity of the surface geometry. But destroyed the original wood matrix l999 No. 3 0 test the integrity of special reasons, also caused test failures; gripping parts of the transverse ribs worn to retain longitudinal ribs and the hot surface of the sample treatment method is effective to solve decapitation Test success rate of 75 to ensure the hot water-cooled steel tensile fatigue tests carried out smoothly physical tests 1999 3 5 Results and discussion by the trial method, succeeded in finding a solution to the problem of early fracture, So what caused the plow handle grip area on the specimen fracture it? have analyzed and discussed, mainly by the rebar that has been gripping parts of the transverse ribs in the process produce tensile fatigue test torque caused by the alternating of. In tensile fatigue,ralph lauren danmark, the free part of the stress state of the sample shown in Figure 3 (a) shows,abercrombie madrid, for each site are subject to alternating tensile stress,ed hardy espana, the role, even by force. Sample was gripping parts of the stress state shown in Figure 3 (b) shows the transverse ribs on the clamping fixture, resulting in an alternating torque,ralph lauren outlet, resulting in cross-border rib and steel cylindrical line focus to produce energy,mulberry vesker, resulting in Early thin crack initiation and development workers, and ultimately lead screening is far below the fatigue properties of the sample in the number of requests, the gripping parts of the fracture, the fatigue test failure and because of slander kinds of hot-rolled steel surface water and the Ministry of the different heart ,ugg outlet, has prompted the junction of energy concentration and early fatigue cracks, resulting in worn parts of the transverse rib clamping force after the state shown in Figure 3 (c) below, to eliminate the transverse ribs caused by the energy concentration, simple and effective solution to By the early issues of this residual stress fracture around 3 points to indicate the force field analysis,uggs online bestellen, worn around the surface of the specimen transverse ribs remaining part should be free: 'at the end pull honey sostenuto reasonable sample points B' sample after hit cross to help Honey Shu lift hold little change, indicating that this method is to destroy the steel surface and the stress state, nor its impact on organizational structure,uggs, is a convenient and simple, practical approach has saved 6 Conclusions (1) hot water steel fatigue test breakage when the problem is due to the presence of transverse ribs fatigue specimen had alternating torque, resulting in the energy concentrated in the transverse ribs and steel cylindrical surface at the junction of labor to promote crack initiation and early development of thin (2 ) worn gripping parts of the transverse ribs of the sample processing simple and convenient method,franklin marshall sale, practical and effective solution to the problem of early break, at home and abroad has not yet been reported, it is large-scale promotion. References lPookLPicokingat] - 'atigueSzandards · BSTNews,uggs nederland, l987.62MallettGP. Fatigue0fReinf ~ needConcreteLondon-HMSO] 99l3 Qiang Wei Zhuo domestic hot-rolled rebar common standard obituary comparison analysis, material series [Cheng 1993,ed hardy vaatteet, ¨ t6) 4 Lu of Chinese Mechanical Engineering Society Materials Society. Gangrene of labor failure analysis. 1987105 LI Xiu-fen. Perry is the fatigue properties of deformed steel dinner experience anhydride pill. Engineering 1997 (by:)
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