Official Answer
Answer
ຜົນຜະລິດແມ່ນມີລັກສະນະໂດຍ 'ຊຸດຖາວອນ', ບ່ອນທີ່ພາກຮຽນ spring ຈະບໍ່ກັບຄືນສູ່ຄວາມສູງເດີມຂອງມັນ $H_{free}$ ຫຼັງຈາກ unloaded, ແຕ່ວັດສະດຸຍັງຄົງຢູ່ໃນຊິ້ນດຽວ. Visually, the waves will appear flattened. This indicates that the applied load $P$ exceeded the elastic limit. Fatigue, however, results in a complete fracture. ພາຍໃຕ້ SEM (Scanning Electron Microscopy), ຄວາມລົ້ມເຫຼວຂອງຄວາມເຫນື່ອຍລ້າຈະສະແດງ 'striations' ຊີ້ໃຫ້ເຫັນເຖິງການຂະຫຍາຍຕົວຂອງຮອຍແຕກທີ່ກ້າວຫນ້າແລະຮູບແບບ 'ເຄື່ອງຫມາຍຫາດຊາຍ', ຕາມດ້ວຍເຂດກະດູກຫັກໄວສຸດທ້າຍ. If the fracture is brittle and occurs shortly after installation, it suggests Hydrogen Embrittlement or a material defect; if it occurs after millions of cycles, it is typical mechanical fatigue near the endurance limit.
