X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1990-05-23
1991-10-08
Westin, Edward P.
X-ray or gamma ray systems or devices
Specific application
Absorption
378 53, 378 66, G01N 2304, G01N 2306, G21K 508
Patent
active
050561243
ABSTRACT:
Method and apparatus for enabling fluid material contained in a package to be examined in a non-destructive manner to see whether there is any unacceptable alteration in the material. This examination is accomplished by shaking the package so that the package and its contents vibrate at the natural resonance frequency thereof, exposing the package to an irradiation of ultra-soft X-ray beams while the package is vibrating at the resonant frequency, either immediately after the package contents begin to be agitated by shaking or immediately after the vibration is stopped and it ceases to be agitated, detecting the strength of X-rays transmitted through the package and its contents, coverting the transmitted X-rays to a corresponding analog signal, and determining any alteration by comparing the analog signal against the refernece signal previously obtained in the same manner as described above for a like package with unaltered contents.
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Honma Hideaki
Imano Shigeki
Kakimoto Kenichi
Kobayashi Toshitaka
Nagata Masanori
Chu Kim-Kwok
Fujimori Kogyo Co. Ltd.
Meiji Milk Products Co. Ltd.
Softex Co., Ltd.
Westin Edward P.
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