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- Development of Thermal Mechanical Fatigue Test Rig 熱機械疲勞試驗器的研制
- By fatigue test of bolt material,the stress-strain life curve is obtained. 通過(guò)螺栓材料的疲勞試驗,獲得了材料的應力應變壽命曲線(xiàn);
- The results show that,in the mechanical bend fatigue test and three point bend test,the underfill material of U1 and U2 both can improve the mechanical bend reliability of BGA assemblies,and U1 material performs better. 結果發(fā)現在機械彎曲可靠性試驗中,U1、U2材料的填充均能提高焊點(diǎn)的機械彎曲可靠性,并且U1的效果更好。
- Conduct material Fatigue Testing and Thermal stress test. 進(jìn)行材料疲勞測試和熱應力測試。
- Among so many factors contributing to durability, mechanical fatigue is the primary factor. 在影響耐久性的諸多因素中，機械疲勞是首要因素。
- High temperature isothermal mechanical fatigue and in phase thermomechanical fatigue (TMF) tests in stress control were carried out on a molybdenum alloy. 對鉬合金進(jìn)行了應力控制高溫低周等溫疲勞和同相位熱機械疲勞試驗。
- Based on the program load spectrum, intensified fatigue test for rearaxleare made. 在編制程序載荷譜的基礎上,對后橋殼體進(jìn)行了強化疲勞試驗。
- The method of correlation factor is an effective method to loads transacting of the fatigue test of airplane structure. 相關(guān)系數法是一種有效的飛機疲勞試驗載荷處理方法。
- In order to overcome such problem, a new technique named as VFT (Virtual Fatigue Test) has been offered in this paper. 為了克服這兩個(gè)難點(diǎn)，論文提出了基于虛擬樣機理論的“虛擬疲勞試驗”技術(shù)。
- Fatigue test is done on medium carbon steel specimens with small surficial pre-cracks and single-edge pre-cracks. 采用帶有微小表面預制裂紋和邊緣預制裂紋的中碳鋼試驗片進(jìn)行了疲勞實(shí)驗。
- The piston rod of family sedan's rear snubber fractured duringearlier stage of rotary bending fatigue test. 家轎后減振器活塞桿在進(jìn)行旋轉彎曲疲勞試驗時(shí)出現早期斷裂。
- Tne formula under given fracture length is verified by fatigue test datas of welded box girder on overhead travelling crane. 并用橋式起重機焊接箱形梁的疲勞試驗數據，對給定裂紋長(cháng)度時(shí)構件疲勞可靠度的計算公式進(jìn)行驗算。
- Abstract： The piston rod of family sedan’s rear snubber fractured during earlier stage of rotary bending fatigue test. 摘 要： 家轎后減振器活塞桿在進(jìn)行旋轉彎曲疲勞試驗時(shí)出現早期斷裂。
- At present,tuning-folk resonance plate structure is common used in crankshaft bending fatigue test bench in domestic diesel engine industry. 目前,國內柴油機行業(yè)普遍使用的曲軸彎曲疲勞強度試驗臺架,均采用音叉共振板結構。
- The effect of temperature on cyclic fatigue life and fracture mechanism on 2524-T4 aluminum alloy was studied by cyclic fatigue test,SEM and TEM. 采用疲勞實(shí)驗、SEM及TEM等分析測試手段,研究溫度對2524-T4合金疲勞壽命及斷裂機制的影響。
- Metallographic analysis,tension test,fatigue test and SEM analysis were conducted on the TA15 titanium alloy welded joint. 對TA15鈦合金板材電子束焊接試樣進(jìn)行了金相分析和靜力試驗、疲勞試驗和掃描電鏡(SEM)分析。
- Pb-free solder;BGA;thermal cycling;dynamic fatigue tests;electrical analysis. 關(guān)鍵詞:無(wú)鉛焊錫;球格陣列構裝;冷熱循環(huán)試驗;動(dòng)態(tài)疲勞試驗;電性分析
- When the fatigue test is carried on the blade of aircraft engine, long-time actuating vibration must be applied to the blade. 摘要飛機發(fā)動(dòng)機葉片進(jìn)行疲勞試驗時(shí)，需對葉片進(jìn)行長(cháng)時(shí)間激振以完成葉片的疲勞試驗。
- The fatigue test results show that the higher shock impedance of overlays,and the higher laser power density,the greater the increase of fatigue life of aluminum alloy. 疲勞試驗結果表明：約束層沖擊阻抗越大，激光脈沖功率密度越高，鋁合金激光沖擊處理后疲勞壽命的提高越顯著(zhù)。
- The fatigue test results have also shown the effect of strengthening mechanism and confirmed the presence of a break in the fatigue life curve in age hardened aluminum alloys. 疲勞試驗結果還顯示了強化機制的影響，證實(shí)了時(shí)效強化合金疲勞壽命曲線(xiàn)的雙斜率的存在。
