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Failure mechanisms of carbon nanotube fibers under different strain rates

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Failure mechanisms of carbon nanotube fibers under different strain rates
นักวิจัย : Zhang, Yani , Zheng, Lianxi , Sun, Gengzhi , Zhan, Zhaoyao , Liao, Kin
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Zhang, Y., Zheng, L., Sun, G., Zhan, Z., & Liao, K. (2012). Failure mechanisms of carbon nanotube fibers under different strain rates. Carbon, 50(8), 2887-2893. , 0008-6223 , http://hdl.handle.net/10220/10803 , http://dx.doi.org/10.1016/j.carbon.2012.02.057
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Carbon
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Strong and uniform carbon nanotube (CNT) fibers with tensile strength around 1.2 GPa were prepared from vertically aligned CNT arrays, and their mechanical properties were studied using a wide range of tensile strain rates. The cyclic load/unload process, polarized Raman measurements, and fiber fracture surfaces were also used to study the failure mechanism of the CNT fibers. It is found that the fibers exhibit a strain-rate strengthening effect, and have different failure mechanisms at high and low strain rates. The key factors that limit the mechanical properties of the CNT fibers were then investigated based on a failure mechanism analysis: inter-tube slippage happens at low strain-rates, and “cascade-like” breaking dominates at high strain-rates. The maximum strength of the fibers appears at high strain rates, and is mainly determined by the CNT alignment.

บรรณานุกรม :
Zhang, Yani , Zheng, Lianxi , Sun, Gengzhi , Zhan, Zhaoyao , Liao, Kin . (2555). Failure mechanisms of carbon nanotube fibers under different strain rates.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhang, Yani , Zheng, Lianxi , Sun, Gengzhi , Zhan, Zhaoyao , Liao, Kin . 2555. "Failure mechanisms of carbon nanotube fibers under different strain rates".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhang, Yani , Zheng, Lianxi , Sun, Gengzhi , Zhan, Zhaoyao , Liao, Kin . "Failure mechanisms of carbon nanotube fibers under different strain rates."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Zhang, Yani , Zheng, Lianxi , Sun, Gengzhi , Zhan, Zhaoyao , Liao, Kin . Failure mechanisms of carbon nanotube fibers under different strain rates. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.