Pansuwan, Jarungrat, and Surachai Numsaraphatnuek. 2022. “Study of Strengthening of Aluminum in Aircraft Structure by Aging Heat Treatment”. Srinakharinwirot University Engineering Journal 17 (2). Bangkok, Thailand:16-30. https://ph02.tci-thaijo.org/index.php/sej/article/view/245720.