Abstract: The quality of a spot weld is determined by applying a periodic pressure while a test current is flowing through it. Poor quality is indicated by a variation in the weld resistance which ...

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(250330) -- KUNMING, March 30, 2025 (Xinhua) -- Staff members transport relief materials at the Kunming Changshui International Airport in Kunming, southwest China's Yunnan Province, March 30, 2025. A ...

Department of Materials and Optoelectronic Science, Center for Functional Polymers and Supramolecular Materials, National Sun Yat-Sen University, Kaohsiung 804, Taiwan ...