Effect of amplitude of vibration in ultrasonic vibration-assisted single point incremental forming

ABSTRACT

In the recent past, ultrasonic vibration-assisted single-point incremental forming has gained the attention of the metal forming researchers’ interest. Being a latest development, the process is not completely established from the point of view of the underlying mechanism and the effect of the process variables on the formability of the component. The amplitude of vibration and frequency of vibration are two ultrasonic process-specific variables which may affect the formability of the component. In this research work, the effect of amplitude of vibration along with forming feed and step-depth have been studied by performing a groove test on AA3003 aluminum sheet. The FFL for the SPIF process is proposed based on the thickness strain of the tensile testing component. The critical value of amplitude of ultrasonic vibration and ultrasonic intensity is identified demarking the ultrasonic softening and ultrasonic hardening zone.

KEYWORDS:

• Tool cone
• single point incremental forming
• ultrasonic vibration
• SPIF
• strain distribution
• fracture forming line
• FFL
• forming limit curve
• FLC
• incremental sheet forming
• ISF
• ultrasonic hardening
• ultrasonic softening

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

Authors would like to acknowledge the funding support received from Gujarat Council on Science and Technology(GUJCOST) in the form of Minor Research Project. Project No: GUJCOST/MRP/2015-16/2623 Approval Date: 28/03/2016.