STEEL PIPE WORKABILITY EVALUATION METHOD

To provide a steel pipe workability evaluation method which offers improved measurement accuracy.SOLUTION: A steel pipe workability evaluation method comprises: a pressing step of compressing a steel pipe 4; a detection step of detecting an acoustic emission wave generated by the compression; and a...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	NAKAZAWA RYO, SUZUKI KENGO, SASADA KAZUYA, IDE SHINSUKE
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	To provide a steel pipe workability evaluation method which offers improved measurement accuracy.SOLUTION: A steel pipe workability evaluation method comprises: a pressing step of compressing a steel pipe 4; a detection step of detecting an acoustic emission wave generated by the compression; and a determination step of determining presence or absence of cracking in the steel pipe 4 on the basis of the detected acoustic emission wave. In the determination step, the presence or absence of cracking in the steel pipe 4 may be determined on the basis of the number of signals exceeding a given threshold per unit time in the detected acoustic emission wave signal.SELECTED DRAWING: Figure 2 【課題】測定精度を向上させた鋼管の加工性評価方法を提供すること。【解決手段】鋼管４を挟圧する挟圧工程と、挟圧により発生するアコースティックエミッション波を検出する検出工程と、検出されたアコースティックエミッション波に基づいて、鋼管４の割れの発生の有無を判定する判定工程と、を含む、鋼管の加工性評価方法。判定工程では、検出されたアコースティックエミッション波の信号において、所定の閾値を超えた単位時間当たりの信号の個数に基づいて、鋼管４の割れの発生の有無を判定してもよい。【選択図】図２