管線鋼落錘撕裂試驗?zāi)芰繙y試系統(tǒng)的分析與應(yīng)用

Analysis and Application of Energy-measuring System to Drop-weighted Tear Test for Linepipe-purpose Steel

摘要: 闡述了落錘撕裂試驗?zāi)芰繙y試系統(tǒng)在DWTT試驗中應(yīng)用的必要性。通過將國產(chǎn)管線鋼落錘撕裂試驗?zāi)芰繙y試系統(tǒng)的測試曲線與ASTM標準和ZWICK試驗機的測試曲線進行對比分析, 證明該測試系統(tǒng)的準確性和可靠性;為定量研究各種因素對管線鋼斷裂韌性的影響以及從理論上分析管線鋼承受沖擊載荷的斷裂機理提供了試驗支持。

Abstract: Discussed is the necessity of application of the energy measuring system to the drop-weighted tear test (DWTT). Based on the result of comparison of the measurement characteristic from the home-made energy measuring system for DWTT for linepipe-purose steel with that from relevant ASTM and ZWICK DWTT machines, it is concluded that the measurement result form the former is accurate and reliable, and it is regarded that the said home-made system is capable of providing testing support to quantitative research on factors responsible for the fracture toughness of the linepipe-purpose steel and the theoretic analysis of the fracture mechanism of the linepipe-purpose steel under impact load.