CAJ | 학술논문

针对液压软管总成存在泄漏、拔脱、断丝、爆破等故障/失效问题，综合考虑液压冲击、温度、压力及弯曲半径等因素对其寿命的影响，设计了液压软管总成可靠性试验台：基于电液伺服技术设计了12通道液压软管总成脉冲试验台，基于双气液泵复合增压技术设计了耐压爆破试验台；基于试验数据进行失效分布拟合优度检验及分布鉴别，得到脉冲、爆破试验数据分别服从对数正态分布、威布尔分布的结论；最后，进行可靠性评估并求得液压软管总成在脉冲、爆破试验条件下的平均寿命、可靠寿命及可靠度的点估计及置信下限。
침대액압연관총성존재설루、발탈、단사、폭파등고장/실효문제，종합고필액압충격、온도、압력급만곡반경등인소대기수명적영향，설계료액압연관총성가고성시험태：기우전액사복기술설계료12통도액압연관총성맥충시험태，기우쌍기액빙복합증압기술설계료내압폭파시험태；기우시험수거진행실효분포의합우도검험급분포감별，득도맥충、폭파시험수거분별복종대수정태분포、위포이분포적결론；최후，진행가고성평고병구득액압연관총성재맥충、폭파시험조건하적평균수명、가고수명급가고도적점고계급치신하한。
Aiming at the faults/failure problems of hydraulic hose assembly such as leakage,joint pull-out,wire fracture and hose burst,in consideration of the life influence factors such as hydraulic impact,temperature,pressure and bending radius,the reliability test rigs for hydraulic hose assembly were designed:including a 12-channel pulse test rig based on electro-hydraulic servo technology and a pressure-proof and burst test rig based on double pneumatic-hydraulic pumps hybrid pressurization technology.Then the test data were dealt with through failure distribution goodness-of-fit test and dis-tribution identification,and it is confirmed that the pulse and burst test data are following lognormal distribution and Weibull distribution respectively.Finally,the point estimate and confidence lower lim-it of mean life,reliability life and reliability for hydraulic hose assembly under the conditions of pulse and burst tests were acquired from reliability evaluation.