Official Answer
Answer
ກະດູກຫັກໃນລະຫວ່າງການຕິດຕັ້ງແມ່ນເກືອບສະເຫມີເນື່ອງຈາກ 'Over-Straining' ຫຼື 'Brittleness ຂອງວັດສະດຸ. ຖ້າວັດສະດຸແມ່ນເຫຼັກກາກບອນສູງ, ໃຫ້ກວດເບິ່ງ Hydrogen Embrittlement ຖ້າມັນຖືກ plated ເມື່ອບໍ່ດົນມານີ້. ຖ້າມັນແມ່ນ 17-7PH, ກວດເບິ່ງບັນທຶກການປິ່ນປົວຄວາມຮ້ອນ; 'ອາຍຸເກີນ' ຫຼື 'ອາຍຸຕໍ່າກວ່າ' ສາມາດສົ່ງຜົນໃຫ້ເກີດຄວາມອ່ອນເພຍທີ່ບໍ່ເໝາະສົມ. Geometrically, if the installation mandrel was too large, the fiber stress at the ring's outer diameter would exceed the Ultimate Tensile Strength (UTS). The calculation $\sigma = _x000c_rac{E imes t imes (D_{exp} - D_i)}{(D_i imes D_{exp})}$ should be used to verify that the strain $\epsilon$ during expansion does not exceed the material's 'Elongation at Break' value (typically 5-10% for these alloys).
