I ngā rā o mua, he maha ngā taura muka whatu o waho e whakamahi ana i te FRP hei whakakaha matua. I ēnei rā, kei reira ētahi taura e whakamahi ana i te FRP hei whakakaha matua, engari e whakamahi ana hoki i te KFRP hei whakakaha matua.
Ko ngā āhuatanga o te FRP e whai ake nei:
(1) Māmā, kaha hoki
Kei waenganui i te 1.5~2.0 te mātotoru whanaunga, arā, 1/4~1/5 o te maitai waro, engari he tata, he teitei ake rānei te kaha kume i tō te maitai waro, ā, ka taea te whakarite i te kaha motuhake ki te maitai koranu kounga teitei. Ka taea e te kaha kume, piko me te kume o ētahi FRP epoxy te neke atu i te 400Mpa.
(2) He ātete pai ki te waikura
He rauemi pai te FRP, ā, he ātete pai ki te hau, ki te wai me ngā kukū whānui o ngā waikawa, te kawakore, te tote, me te maha o ngā hinu me ngā whakarewa.
(3) Ngā āhuatanga hiko pai
He rauemi ārai pai rawa atu te FRP, e whakamahia ana hei hanga ārai. Ka taea tonu e ia te tiaki i ngā āhuatanga hiko pai i raro i te auau teitei. He pai te uruhanga o te ngaruiti.
KFRP (miro aramid polyester)
Ko te matua whakakaha taura muka whatu kua whakakahangia ki te muka aramid (KFRP) he momo matua whakakaha taura muka whatu kore-whakarewa hou, e whakamahia whānuitia ana i roto i ngā whatunga urunga.
(1) Māmā, kaha hoki
He iti te mātotoru me te kaha teitei o te matua taura muka whatu kua whakapakarihia ki te muka aramid, ā, ko tōna kaha motuhake me te modulus motuhake he nui atu i ngā matua waea maitai me ngā matua taura whatu kua whakapakarihia ki te muka karāhe.
(2) Te whānui iti
He iti ake te tauwehenga rārangi o te matua taura whatu kua whakapakarihia ki te muka aramid i te matua waea maitai me te matua taura whatu kua whakapakarihia ki te muka karāhe i roto i te awhe pāmahana whānui.
(3) Ātete pānga me te ātete whati
Ko te matua o te taura whatu muka kua whakapakarihia ki te muka aramid, ehara i te mea he kaha kume tino teitei (≥1700MPa), engari he ātete pānga me te ātete pakaru hoki, ā, ka taea te pupuri i te kaha kume tata ki te 1300MPa ahakoa ka whati.
(4) He ngāwari pai
He māmā te matua o te taura whatu muka kua whakapakarihia ki te muka aramid, ā, he ngāwari ki te piko, ā, ko te diameter piko iti rawa he 24 ngā wā noa iho i te diameter. He hanganga kiato te taura whatu o roto, he ataahua te āhua, ā, he tino pai te mahi piko, he mea tino pai mō te waea i roto i ngā taiao uaua o roto.
Wā tuku: Pipiri-25-2022