【摘要】：碳纖維復(fù)合材料(CFRP)的力阻特性已經(jīng)在實(shí)驗(yàn)和理論上獲得了較多的探索與驗(yàn)證。將碳纖維與改進(jìn)配方的基體制成新型的CFRP傳感材料,并對(duì)其力阻特性進(jìn)行測試,驗(yàn)證了CFRP作為傳感器的可行性,這也是CFRP成為集成承載特性和傳感特性的智能材料所必備的條件。然而在實(shí)際工程中,承載材料的受力情況遠(yuǎn)比拉伸試驗(yàn)復(fù)雜,因此設(shè)計(jì)了一項(xiàng)實(shí)驗(yàn),將CFRP傳感材料布置于梁內(nèi)的受拉區(qū),最大限度地模擬受力筋的實(shí)際受力情況,測試了CFRP傳感材料在實(shí)際工程的復(fù)雜受力情況下,對(duì)荷載、裂縫等結(jié)構(gòu)狀態(tài)信息的反饋情況。實(shí)驗(yàn)結(jié)果表明,CFRP傳感材料能夠較為直觀地反映以上結(jié)構(gòu)信息。
[Abstract]:The mechanical and resistive properties of carbon fiber reinforced composites (CFRP) have been investigated and verified both experimentally and theoretically. A new type of CFRP sensing material was made from carbon fiber and modified matrix, and its force-resistance characteristic was tested. The feasibility of using CFRP as sensor was verified. This is also a necessary condition for CFRP to be an intelligent material integrated with load-bearing and sensing properties. However, in the actual engineering, the load-bearing material is much more complicated than the tensile test, so an experiment is designed, in which the CFRP sensing material is arranged in the tensile zone of the beam to simulate the actual stress of the reinforcement to the maximum extent. The feedback of CFRP sensing materials to structural state information such as loads cracks and so on is tested under the complicated stress condition of actual engineering. The experimental results show that the CFRP sensing materials can directly reflect the above structural information.
【作者單位】： 江蘇大學(xué)土木工程與力學(xué)學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(51478209);國家自然科學(xué)基金青年基金(51508235) 江蘇省科技廳基金(BK20140553)
【分類號(hào)】：TB332;TQ342.742
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本文編號(hào)：2444476