He aha ke kumu Granite no ka tomography computed ʻoihana?

ʻO ke kahua Granite no ka tomography computed ʻoihana (CT) kahi kahua i hoʻolālā kūikawā ʻia e hāʻawi ana i kahi kūlana paʻa a ʻaʻohe haʻalulu no ka scan CT kiʻekiʻe. He ʻenehana kiʻi ikaika ka scan CT e hoʻohana ana i nā kukuna X e hana i nā kiʻi 3D o nā mea, e hāʻawi ana i ka ʻike kikoʻī e pili ana i ko lākou ʻano, ka haku mele ʻana, a me ke ʻano o loko. Hoʻohana nui ʻia ka scan CT ʻoihana ma nā kahua e like me ka aerospace, automotive, electronics, a me ka ʻepekema mea, kahi e pono ai ka kaohi maikaʻi, ka ʻike ʻana i nā hemahema, ka ʻenekinia hoʻohuli, a me ka hoʻāʻo ʻana ʻaʻole luku.

ʻO ka maʻamau, hana ʻia kahi kumu Granite me kahi poloka paʻa o ka granite kiʻekiʻe, nona ka paʻa mechanical, thermal, a me ke kemika maikaʻi loa. ʻO Granite kahi pōhaku kūlohelohe i haku ʻia me ka quartz, feldspar, a me ka mica, a he ʻano like a maikaʻi hoʻi, kahi e kūpono ai no ka mīkini kikoʻī a me nā noi metrology. He kūpaʻa loa hoʻi ʻo Granite i ka ʻaʻahu, ka pala, a me ka deformation, ʻo ia nā mea koʻikoʻi i ka hōʻoia ʻana i ka pololei a me ka hilinaʻi o ka CT scan.

I ke hoʻolālā ʻana i kahi kahua Granite no ka CT ʻoihana, pono e noʻonoʻo ʻia kekahi mau mea, e like me ka nui a me ke kaumaha o ka mea e scan ʻia, ka pololei a me ka wikiwiki o ka ʻōnaehana CT, a me nā kūlana ambient o ke kaiapuni scan. Pono ka nui o ke kahua Granite e hoʻokipa i ka mea a me ka scanner CT, a pono e mīkini ʻia i kahi pae kikoʻī o ka pālahalaha a me ka parallelism, ʻoi aku ka liʻiliʻi ma mua o 5 micrometers. Pono hoʻi e hoʻolako ʻia ke kahua Granite me nā ʻōnaehana dampening haʻalulu a me nā mea hoʻopaʻa wela e hōʻemi i nā haunaele o waho a me nā loli o ka mahana e hiki ke hoʻopilikia i ka maikaʻi o ka CT scan.

He nui nā pono o ka hoʻohana ʻana i kahi kumu Granite no ka CT ʻoihana. ʻO ka mea mua, he insulator thermal maikaʻi loa ʻo Granite, kahi e hōʻemi ai i ka hoʻoili wela ma waena o ka mea a me ke kaiapuni a puni i ka wā o ka scan, e hōʻemi ana i ka distortion thermal a hoʻomaikaʻi i ka maikaʻi o ke kiʻi. ʻO ka lua, he haʻahaʻa ka coefficient o ka hoʻonui thermal o Granite, kahi e hōʻoiaʻiʻo ai i ka paʻa dimensional ma luna o nā ʻano mahana like ʻole, a hiki ke ana pololei a hana hou ʻia. ʻO ke kolu, ʻaʻole magnetic a ʻaʻole conductive ʻo Granite, kahi e kūpono ai me nā ʻano scanner CT like ʻole a hoʻopau i ka hoʻopilikia ʻana mai nā kahua electromagnetic waho.

I ka hopena, ʻo kahi kumu Granite no ka CT ʻoihana he ʻāpana koʻikoʻi ia e hiki ke hoʻonui nui i ka pololei, ka wikiwiki, a me ka hilinaʻi o ka scan CT. Ma ka hāʻawi ʻana i kahi kahua paʻa a me ka haʻalulu ʻole, hiki i kahi kumu Granite ke kiʻi pololei o nā mea paʻakikī, e alakaʻi ana i ka hoʻomaikaʻi ʻana i ka kaohi maikaʻi, ka hoʻomohala huahana, a me ka noiʻi ʻepekema.