Bolt tshuaj xyuas yog muab faib ua ob hom: phau ntawv thiab tshuab. Artificial yog qhov tseem ceeb tshaj plaws thiab siv dav hauv kev tshawb pom zoo ib yam. Txhawm rau txo qis cov khoom tsis zoo, cov neeg ua haujlwm tsim khoom lag luam feem ntau tshawb xyuas cov khoom ntim lossis xa khoom pom zoo kom tshem tawm cov khoom puas (nrog rau cov hniav puas tsuaj, sib tov, xeb, thiab lwm yam).
Lwm txoj kev yog tag nrho cov tshuab tsis siv neeg tshuaj xyuas, feem ntau yog sib nqus particle kuaj. Magnetic particle test siv qhov kev sib cuam tshuam ntawm cov xaim magnetic teb ntawm qhov tsis xws luag thiab cov khoom sib nqus. Hauv kev teb rau qhov sib txawv ntawm qhov sib nqus permeability ntawm qhov tsis xws luag (xws li cov kab nrib pleb, slag inclusions, mixing, thiab lwm yam) hauv bolts thiab hlau, qhov sib nqus ntawm qhov chaw tsis tu ncua ntawm cov ntaub ntawv no yuav raug cuam tshuam tom qab magnetization, tsim kom muaj qhov sib nqus nqus ntawm qhov chaw. nto ntawm lub workpiece ntawm ib co sib nqus flux to, uas attracts lub magnetic particle tsub kom ib tug sib nqus particle tsub zuj zuj nyob rau hauv qhov chaw tsis xws luag - magnetic marks. Nyob rau hauv cov teeb pom kev zoo tsim nyog, Kev nthuav qhia qhov chaw thiab cov duab ntawm qhov tsis xws luag, kev soj ntsuam thiab piav qhia txog qhov sib txuam ntawm cov khoom sib nqus no tau ua tiav lub hom phiaj ntawm kev tshem tawm cov khoom puas.
