Optical method for accurate force measurement: dynamic response evaluation of an impact hammer

Yusaku Y.F. Fujii

doi:10.1117/1.2170713

1 February 2006 Optical method for accurate force measurement: dynamic response evaluation of an impact hammer

Yusaku Y.F. Fujii

Author Affiliations +

Optical Engineering, Vol. 45, Issue 2, 023002 (February 2006). https://doi.org/10.1117/1.2170713

Abstract

The impact response of an impact hammer is evaluated by means of an optical method. In the method, an object is first levitated using a pneumatic linear bearing, so that it encounters negligible friction, and is then made to collide with the impact hammer under test. The total force acting on the levitated mass (i.e., the product of the mass and acceleration) is measured highly accurately by measuring the Doppler frequency shift of a laser beam reflected from the colliding mass. The velocity, position, acceleration, and inertial force of the mass are then numerically calculated from the measured time-varying Doppler frequency shift. The output signal of a force transducer embedded in the hammer and the measured total force acting on the levitated mass are compared. The future prospects of the proposed method are discussed.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Yusaku Y.F. Fujii "Optical method for accurate force measurement: dynamic response evaluation of an impact hammer," Optical Engineering 45(2), 023002 (1 February 2006). https://doi.org/10.1117/1.2170713

Published: 1 February 2006

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available