Examination of conditions in contact interface using ultrasonic measurement

• Autorzy: Saiki H. , Marumo Y. , Ruan L. , Matsukawa T. , Zhan Z. H. , Sakata Y.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In metal forming, the conditions of contact interface have a great effect on the characteristics of interface friction and heat transfer between tool and workpiece. Estimation of contact conditions in the toolworkpiece interface is required in order to optimize process conditions. Ultrasonic examination is an effective method to estimate the contact conditions. In this study, we investigated the effects of ultrasonic frequencies and intermediate air/lubricant films in the contact interface on the properties of penetration and reflection of incident ultrasonic waves. Design/methodology/approach: We have presented a method by which the contact conditions are evaluated from the relative intensity of reflected ultrasonic waves at the interface. Using this evaluation method, the relative intensity was measured continuously during processes. Findings: The effects of ultrasonic frequencies and intermediate films on the properties of penetration and reflection of incident ultrasonic waves were revealed. The presented method was effective for evaluating the variation of contact interface conditions. Research limitations/implications: Thickness of intermediate films can be measured using this ultrasonic examination. The performance of lubricants can be estimated. Practical implications: The optimization of forming processes will be achieved based on the evaluation results of contact conditions. Originality/value: Tribological conditions including intermediate air/lubricants were evaluated by ultrasonic examination. This shows the possibility that the lubricant behaviour in the contact interface is examined during processes.

Słowa kluczowe

EN

plastic forming; tribology; contact conditions; ultrasonic examination

PL

kształtowanie plastyczne; tribologia; badanie ultradźwiękowe

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2007
• Tom: Vol. 28, nr 2
• Strony: 113--118
• Opis fizyczny: Bibliogr. 27 poz., wykr.

Twórcy

autor

Saiki H.

autor

Marumo Y.

autor

Ruan L.

autor

Matsukawa T.

autor

Zhan Z. H.

autor

Sakata Y.

• Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kuammoto 860-8555, Japan,

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