In these years, the bag-filter in a dust collector of the waste incinerator is used widely to remove the toxic substance, for example toxic gas, dioxins and heavy metals included in the ash dust by passing through the filter cloth. In order to prevent the destroy of filter, it is necessary to establish the evaluation method of wear for bag-filter. In this study, as investigation of the wear of bag-filter by ash dust, sintered magnetite compact were used for counter material for sliding wear test. The precise amount of magnetite particles embedded into bag-filter was determined by a vibration sample magnetometer (VSM) measurement. It is found that net amount of wear of the bag-filter could be precisely determined by the magnetic measurement. It is also found that the net amount of sliding wear of the bag-filter increases with increasing the wear distance, sliding speed and applied load. To discuss the validity of proposed method, shot peening test with deoxidized iron particles and optical fiber measurement were also carried out for bag-filter sample. The data obtained by the shot peening test and optical fiber measurement are consistent with that obtained by the sliding wear test.
