Associations Among Beta Backscatter Measurements and Other Measures of Shell Strength

Wilson, S. P.; Marks, H. L.; James, Paul E.

doi:10.3382/ps.0470232

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…In the initial work of and Wilson et al (1968), the beta backscatter reading was used to pre-estimate the height from which a ball was dropped to break the shell. This measure of the shell strength was found to be highly correlated with beta backscatter which also provided an estimate of the shell thickness.…”

Section: Non-destructive Beta Backscattermentioning

confidence: 99%

“…Since then a number of workers have used the same or similar methods, e.g. a steel ball or similar object dropping from increasing heights (Swenson and James, 1932;Hale, 1954;Mueller, 1957;Tyler and Geake, 1963;Franket al, 1964;Jamesand Retzer, 1967;Wilson et al, 1968), steel balls ascending in size dropped from a fixed height (Bennett, 1961 ;Bowman and Challender 1963;Wells, 1967a) or a steel ball dropped repeatedly from a fixed height (Tyler and Geake, 1964a, b, c). Several sophisticated instruments have been designed to speed up this type of impact test, such as the 'Bomber' described by Bennett (1961) which drops a series of balls from a fixed height on to the shell.…”

Section: Impact Testsmentioning

confidence: 99%

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Measurement of Eggshell Strength*

Voisey¹,

Hunt

1974

Journal of Texture Studies

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Techniques used to measure the eggshell strength and associated parameters are reviewed. Much of the early research was based on crude instruments that did not adequately control test conditions, particularly the rate of applying force to the shell. Better instruments have been used recently to obtain precise readings. A significant advance has been the development of techniques to describe the physical properties of the shell material. This is potentially more meaningful than the empirical comparisons of egg behaviour, and is leading to a better understanding of the shell fracture mechanism. Two practical tests are currently available to the biologist for non‐destructive measurements: specific gravity of the egg and shell deformation under a non‐destructive force. Both predict ‐ with acceptable precision ‐ the shell fracture force. Eggshell strength has been investigated for over 70 years, but an ideal test method has yet to be found, and research is still required.

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Section: Non-destructive Beta Backscattermentioning

confidence: 99%

Section: Impact Testsmentioning

confidence: 99%

Measurement of Eggshell Strength*

Voisey¹,

Hunt

1974

Journal of Texture Studies

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show abstract

“…Other nondestructive techniques have been previously described in this journal (James and Retzer, 1967;Wilson et al, 1968), but they, in general, are non-portable.…”

mentioning

confidence: 98%