Experimental performance study of a solar parabolic dish photovoltaic-thermoelectric generator

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Bamroongkhan P., Lertsatitthanakorn C., Soponronnarit S.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2019

วารสาร: International Orthodontics (1761-7227)

Volume number: 158

Issue number: 1

หน้าแรก: 528

หน้าสุดท้าย: 533

จำนวนหน้า: 6

นอก: 1761-7227

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85074431154&doi=10.1016%2fj.ortho.2019.09.003&partnerID=40&md5=e327baa963625f614a588527d6761721

ภาษา: English-Great Britain (EN-GB), French-France (FR-FR)

ดูในเว็บของวิทยาศาสตร์ | ดูบนเว็บไซต์ของสำนักพิมพ์ | บทความในเว็บของวิทยาศาสตร์

บทคัดย่อ

Objectives: The aim of this investigation was (1) to compare the effects of cold-hardening bending and direct electric resistance heat treatment (DERHT) methods; and (2) to compare the effects of offsets and angulations on the mechanical properties and thermal analysis of NiTi alloy archwire. Methods: Nickel-titanium (NiTi) archwires (Ormco, Glendora, CA), 0.016 × 0.022-inch, were bent by cold-hardening bending and DERHT methods into 1-mm, 2-mm, or 3-mm offset for a 3-point bending test, and at angles of 30°, 45°, or 60° to the horizontal plane for testing the change in transformation temperature (Af) measured by differential scanning calorimetry (DSC). The data were analysed using ANOVA followed by the Scheffe post-hoc test. Results: The 3-point bending test results of the cold-hardening bending and DERHT methods were not significantly different between the 1-mm, 2-mm and 3-mm offset groups (95% CI: −0.05 to 0.97; P = 0.082, 95% CI: −0.65 to 0.74; P = 0.983 and 95% CI: −0.61 to 0.98; P = 0.813, respectively). Increasing the offset resulted in a significantly decreased force in the 3-point bending test (P < 0.001). The Af temperatures of the cold-hardening bending and DERHT methods were not significantly different for the 30°, 45°, and 60° bending angulations (95% CI: −1.93 to 1.39; P = 0.876, 95% CI: −1.2 to 0.87; P = 0.878, 95% CI: −2.24 to 1.18; P = 0.636, respectively). Af temperatures were not influenced by different bending angulations. Conclusions: NiTi archwire shape can be modified by using both cold-hardening and DERHT bending methods, because the mechanical properties and Af temperature are not affected. However, the bending distance has an effect on the mechanical properties. © 2019 CEO

คำสำคัญ

Cold-hardening bending method, Differential scanning calorimetry, Direct electric resistance heat treatment method, DSC, NiTi alloy, Three-point bending test