标准摘要
[中文适用范围]： 本部分描述了验证航空液压流体动力滤芯破裂/背压压力等级的方法。该方法用于测试滤芯在正常流动方向上承受指定压差的能力，通过受污染的流体穿过滤芯直到发生破裂/背压或达到最大预期压差而不失效来实现。此部分不适用于在模拟实际使用条件下对滤芯进行资格鉴定；这需要特定协议，包括实际使用的条件（例如工作流体或污染）。由此产生的测试数据可以用于比较航空液压滤芯的性能。 [外文原描述]： ISO 14085-4:2015 describes a method for verifying the collapse/burst pressure rating of an aerospace hydraulic fluid power filter element. This represents the capability of a filter element to withstand a designated differential pressure in the normal (intended) direction of flow, created by flowing contaminated fluid through the filter element until either collapse/burst occurs or the maximum expected differential pressure is reached without element failure. The collapse/burst pressure test can be conducted in conjunction with an efficiency test performed according to the procedure defined in the ISO 14085-3 by continuing the contaminant injection until the designated filter element differential pressure is reached. ISO 14085-4:2015 is not intended to qualify a filter element under replicate conditions of service; this can only be done by a specific test protocol developed for the purpose, including actual conditions of use, for example the operating fluid or contamination. The tests data resulting from application of this part of ISO 14085 can be used to compare the performance of aerospace hydraulic filter elements.
英文名称Aerospace series — Hydraulic filter elements — Test methods — Part 4: Verification of collapse/burst pressure rating