Method and apparatus for assessing material properties of sheet-like materials

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874904

Telschow, Kenneth L ^[1]; Deason, Vance A ^[1]

---

1. Idaho Falls, ID

Apparatus for producing an indication of a material property of a sheet-like material according to the present invention may comprise an excitation source for vibrating the sheet-like material to produce at least one traveling wave therein. A light source configured to produce an object wavefront and a reference wavefront directs the object wavefront toward the sheet-like material to produce a modulated object wavefront. A modulator operatively associated with the reference wavefront modulates the reference wavefront in synchronization with the traveling wave on the sheet-like material to produce a modulated reference wavefront. A sensing medium positioned to receive the modulated object wavefront and the modulated reference wavefront produces an image of the traveling wave in the sheet-like material, the image of the anti-symmetric traveling wave being related to a displacement amplitude of the anti-symmetric traveling wave over a two-dimensional area of the vibrating sheet-like material. A detector detects the image of the traveling wave in the sheet-like material.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• DOE Contract Number: AC07-94ID13223
• Assignee: Bechtel Bwxt Idaho, LLC (Idaho Falls, ID)
• Patent Number(s): US 6486962
• OSTI ID: 874904
• Country of Publication: United States
• Language: English

Related Subjects

method
apparatus
assessing
material
properties
sheet-like
materials
producing
indication
property
excitation
source
vibrating
produce
traveling
wave
light
configured
wavefront
reference
directs
modulated
modulator
operatively
associated
modulates
synchronization
sensing
medium
positioned
receive
produces
image
anti-symmetric
related
displacement
amplitude
two-dimensional
detector
detects
light source
operatively associated
excitation source
/356/