摘 要：鋼絞線最大力伸長(zhǎng)率是衡量其材料特性的一項(xiàng)重要力學(xué)性能指標(biāo)，如何精確測(cè)量該指標(biāo)是長(zhǎng)期以來(lái)一直在探索的問題。設(shè)計(jì)出的測(cè)量鋼絞線最大力伸長(zhǎng)率的新系統(tǒng)，采用電測(cè)量數(shù)據(jù)與圖像實(shí)時(shí)同步采集和圖像序列變形分析相結(jié)合的方法，此方法在測(cè)量過程中，非接觸測(cè)量試件的變形，克服了目前鋼絞線測(cè)量中的弊端。實(shí)現(xiàn)了鋼絞線最大力伸長(zhǎng)率的測(cè)量，提高了測(cè)量的精度和可靠性。
關(guān)鍵詞：鋼絞線；最大力伸長(zhǎng)率；同步采集
中圖分類號(hào)：TG142， TH871.7 文獻(xiàn)標(biāo)識(shí)碼：A
文章編號(hào)：1672-4984（2008）01-0019-03
Research on testing setup of pre-stressed steel strand stretching based on image correlation
JIANG Ming
（Department of Civil Engineering，Suzhou Science and Technology University，Suzhou 215011，China）
Abstract: Steel strand stretching is an important mechanics performance criterion for its material characteristic. How to measure this criterion accurately had been confused for long time. A new system which using electronic measuring data plus image real synchronized collection technical and image series deformation analysis method was designed to measure steel strand stretching. It overcame the measurement problems by using non-contact measurement method， realized measurement of steel strand stretching and enhanced the measurement accuracy and reliability.
Key wards: Steel strand； Stretching； Synchronized collection
Editor：liyan
