ʻElima kumu nui no ka ʻike ʻana i nā hemahema o ka ʻili o ka square a me recnā paipu tangular:

1. Nānā Eddy i kēia manawa

Loaʻa ka hoʻāʻo ʻana o Eddy i kēia manawa i ka hoʻāʻo ʻana o ka eddy o kēia manawa, ka hoʻāʻo ʻana i kēia manawa eddy mamao, ka hoʻāʻo ʻana o ka eddy i kēia manawa he nui, a me ka hoʻāʻo ʻana i kēia manawa. Me ka hoʻohana ʻana i ka eddy current sensor no ka hoʻoulu ʻana i nā mea metala, ʻo ke ʻano a me ke ʻano o nā hemahema o ka ʻili o ka paipu rectangular e hoʻoulu i nā ʻano hōʻailona ʻikepili. Loaʻa iā ia nā pōmaikaʻi o ka pololei nānā kiʻekiʻe, ʻike kiʻekiʻe o ka nānā ʻana, a me ka wikiwiki o ka nānā ʻana. Hiki iā ia ke nānā i ka ʻili a me nā papa haʻahaʻa o ka paipu i hoʻāʻo ʻia, ʻaʻole e hōʻeha ʻia e nā koena e like me nā ʻaila ʻaila ma ka ʻili o ka paipu kila square i hoʻāʻo ʻia. ʻO ka hemahema ʻo ia ka maʻalahi o ka hoʻokaʻawale ʻana i nā hale kīnā ʻole e like me nā hemahema, ʻoi aku ka kiʻekiʻe o ka helu ʻike wahaheʻe, a ʻaʻole maʻalahi ka hoʻoponopono ʻana i ka hoʻonā ʻana o ka pale.

2. Ka ho'āʻo ultrasonic

Ke komo ʻo ultrasound i kahi mea a paʻi i kahi kīnā, hana kekahi hapa o ke alapine kani i kahi ʻaoʻao noʻonoʻo. ʻO ka hana nui o ka loaʻa ʻana a me ka hoʻouna ʻana hiki ke hoʻopaʻa ʻia i ka nalu o ka ʻili i hōʻike ʻia, a hiki ke ʻike i nā hewa me ka pololei a pololei. Hoʻohana pinepine ʻia ka hoʻāʻo ʻana o ka ultrasonic i ka nānā ʻana i nā hoʻolei kila. He kiʻekiʻe ka nānā ʻana, akā ʻaʻole maʻalahi ke nānā ʻana i ka pipeline paʻakikī. Ua ʻōlelo ʻia ʻo ka ʻili o ka paipu rectangular e nānā ʻia he ʻano ʻōlinolino, a ua ālai ʻia ka āpau ma waena o ke kāmela a me ka ʻili i nānā ʻia me kahi mea hoʻohui silane.

3. ʻO ke ʻano o ka nānā ʻana i nā ʻāpana magnetic

ʻO ke kumu kumu o ke ʻano o ka nānā ʻana i nā ʻāpana magnetic e hoʻopiha i ke kahua electromagnetic i ka mea maka o ka paipu kila square. E like me ka launa ʻana ma waena o ka leakage electromagnetic field a me ka nānā ʻana i ka ʻāpana magnetic, i ka wā e pau ai ka hemahema a i ʻole ka hemahema o ka ʻili o ka ʻili a i ʻole ka ʻili kokoke i ka ʻili, e hoʻololi ʻia ka laina laina ma kahi ʻaʻohe hoʻomau a kīnā ʻole, e hopena i he kahua hookuonoono. ʻO kāna mau mea maikaʻi ʻoi aku ka liʻiliʻi o ka hoʻopukapuka ʻana i nā mīkini a me nā papahana lako, kūpaʻa kiʻekiʻe a me ke kiʻi ikaika. ʻO ka hemahema ʻo ia ka piʻi ʻana o ke kumukūʻai hana maoli, ʻaʻole pololei ka hoʻokaʻawale ʻana o nā hemahema, a lohi ka wikiwiki o ka nānā ʻana.

4. ʻIke infrared

E like me ke kiʻekiʻe-frequency magnetic induction electromagnetic coil, hoʻoulu ʻia ka mana electromotive ma ka ʻili o ka pahu square. ʻO ka ikaika electromotive i hoʻoulu ʻia e hoʻopau i ka wahi hemahema i ka nui o ka ikehu electromagnetic, e piʻi ai ka mahana o kekahi mau ʻāpana. E hoʻohana i ka infrared induction e nānā i ka wela o kekahi mau ʻāpana e ʻike i ka hohonu o ka hemahema. Hoʻohana pinepine ʻia nā mea ʻike infrared no ka nānā ʻana i nā hemahema o ka ʻili, a hoʻohana ʻia ka ʻehaʻeha no ka nānā ʻana i nā mea metala maʻamau ma luna o ka ʻili.

5. ʻO ka nānā ʻana i ka leakage flux magnetic

ʻO ke ʻano o ka nānā ʻana i ka leakage flux magnetic e like loa me ke ʻano o ka nānā ʻana i ka ʻāpana magnetic, a ʻoi aku ka ikaika o kāna kahua noi, sensitivity a me ke kūpaʻa ma mua o ke ʻano o ka nānā ʻana.