I ngā wā roa kua pahure ake nei, i whakahuahia e mātou ngā ripanga tahuritanga o tāwāhi ki tā Haina, engari i te whakamahinga, nā te hanganga matū o te rauemi, te hangarau tukatuka, te rahi āhuahanga o te tauira me ētahi atu āhuatanga tae atu ki te tika o ngā taputapu ine i ngā whenua rerekē, te rerekētanga o te whanaungatanga tahuritanga pakeke me te kaha hei whakatū i te pūtake me ngā tikanga tukatuka raraunga, i kitea e mātou he rerekētanga nui i waenga i ngā uara tahuritanga rerekē. Hei tāpiri, kāore he paerewa kotahi, he rerekē te ripanga tahuritanga e whakamahia ana e ia whenua, ka whakapoauau i ngā uara tahuritanga pakeke me te kaha.
Mai i te tau 1965, kua whakatūhia e China Metrology Scientific Research me ētahi atu wāhanga ngā paearu pakeke me ngā uara kaha o Brinell, Rockwell, Vickers me Rockwell i runga i te maha o ngā whakamātautau me ngā rangahau tātari, hei tūhura i te whanaungatanga e rite ana i waenga i ngā momo pakeke me te kaha o ngā konganuku rino, mā te manatoko whakaputa. I whakawhanakehia e rātou tā mātou ake "ripanga tahuritanga pakari me te kaha o te konganuku pango" e tika ana mō ngā raupapa maitai e 9 me te aha te kounga o te maitai. I roto i te mahi manatoko, neke atu i te 100 ngā wāhanga i whai wāhi, neke atu i te 3,000 ngā tauira i tukatukahia, ā, neke atu i te 30,000 ngā raraunga i inehia.
He ōrite te tohatoha o ngā raraunga manatoko ki ngā taha e rua o te pihi tahuritanga, ā, ko ngā hua he rite tonu ki te tohatoha noa, arā, ko ēnei ripanga tahuritanga he rite tonu ki te ao tūturu, ā, e wātea ana hoki.
Kua whakaritea ēnei ripanga tahuritanga puta noa i te ao ki ngā ripanga tahuritanga ōrite o ngā whenua 10, ā, ko ngā uara tahuritanga o tō tātou whenua he rite tonu ki te toharite o ngā uara tahuritanga o ngā whenua rerekē.
Wā tuku: Maehe-26-2024
