介紹基于LabVIEW 的鋼材表面裂紋定量識別技術，設計了基于LabVIEW 的鋼桿裂紋定量檢測系統，并對鋼桿表面橫向裂紋缺陷進行模擬實驗，初步建立數學模型，通過評判pp V 得到反映裂紋狀況的定量檢測結果，從而驗證了該方法的可行性和有效性，并得出相關的結論。
關鍵詞：定量檢測 LabVIEW 數學模型
ABSTRACT: Techniques of quantitative inspection of cracks for the crack magnetic flux
leakage signal on steels based on LabVIEW is presented on this paper, quantitative testing system for crack defect on steels surface based on LabVIEW is designed, and simulation experiments are done, mathematical model is built ， the quantitative testing result to reflect on condition of crack can be acquired by quantitative analysis the signal peak-peak value, experiment results has proved the feasibility and effectiveness of the method, and relative conclusion is obtained．
KEYWORDS: Quantitative testing LabVIEW Mathematical model