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            EEPW首頁(yè) > 模擬技術(shù) > 設(shè)計(jì)應(yīng)用 > LY12CZ鋁合金三點(diǎn)彎曲損傷的聲發(fā)射監(jiān)測(cè)

            LY12CZ鋁合金三點(diǎn)彎曲損傷的聲發(fā)射監(jiān)測(cè)

            作者: 時(shí)間:2013-11-26 來(lái)源:網(wǎng)絡(luò) 收藏

            損傷的監(jiān)測(cè)

            本文采用技術(shù)對(duì)試樣損傷斷裂過(guò)程進(jìn)行監(jiān)測(cè),探索技術(shù)在金屬構(gòu)件斷裂損傷研究中的應(yīng)用。介紹了信號(hào)采集系統(tǒng),提供了硬件系統(tǒng)常用的降噪措施。試驗(yàn)分恒定載荷和加載速率為定值兩類(lèi)情況進(jìn)行,分析了試樣在不同情況下的聲發(fā)射監(jiān)測(cè)試驗(yàn)結(jié)果。

            MONITORING OF DURALUMIN THREE-POINT-BENDING FRACTURE PROCESS WITH AE TECHNIQUE
            Gao Chengqiang Wang hangong Yang Nengjun Liu Xiaofang
            (Secton 501 of the Second Artillery Engineering College, Xi’an, 710025)
            Abstract: Based on the analysis of the AE experiment, which monitored the LY12CZ duralumin sample’s three-point-bending fracture process, the paper probed into the application of acoustic emission technique to studying the metal component damage. Signal acquisition system is presented and common denoise methods of hardware system are supplied. The experiment is conducted in two cases, one with constant load and another with constant loading rate. Experiment results of acoustic emission monitoring of different cases are analyzed.
            Keywords: Duralumin,Acoustic Emission,Noise,Three-point-bending
            [1]。
            [2]。
            [3]:
            B=12mm,高度W=24mm,長(zhǎng)度L=120mm,預(yù)制裂紋a=9mm,試驗(yàn)跨度S=100mm。
            [4]。
            [5];但達(dá)到臨界狀態(tài)后,由于沒(méi)有更多的能量?jī)?chǔ)存,使得裂縫擴(kuò)展呈失穩(wěn)狀態(tài),出現(xiàn)連續(xù)和迅速的聲發(fā)射。
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