Abstract
Investigation on Material Deformation Characteristics of Ultrasound-assisted Microcompression with Dynamic Force Sensing Technology
Highlights
From the last decade, the application of ultrasonic assistance has been attracting increasing attention in microforming.[1,2,3,4,5,6,7,8] The benefits of ultrasonic vibration in microforming mainly include the surface and volume effects
An ultrasonic-assisted microcompression test system was developed for studying the evolution of acoustic softening
To obtain the stress reduction by acoustic softening, dynamic oscillatory forces were measured with a die-embedded quartz sensor
Summary
The application of ultrasonic assistance has been attracting increasing attention in microforming.[1,2,3,4,5,6,7,8] The benefits of ultrasonic vibration in microforming mainly include the surface and volume effects. Some others insist that the volume effect is just an apparent stress reduction due to the averaging of the dynamic oscillatory stress,(13) which is called stress superposition without the change of materials during processing. These two theories have been debated for decades but no conclusions can be drawn, which theory is true or whether both occur under certain condition is still unclear
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