## Mathematics and formulae in NDT |

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### Contents

Foreword | 7 |

BASIC MATHEMATICAL PROCESSES | 13 |

BASIC FORMULAE IN NDT AND WORKED EXAMPLES | 31 |

Copyright | |

1 other sections not shown

### Common terms and phrases

acoustic impedance Algebra aluminium ampere ampere per metre amplitude ratio amps angle probe antilog attenuation beam angle Calculate cavity characteristic curve coil turns compression wave conversion factor convert cross-multiplying curie decibels decimal point defect denominator depth of penetration dividing both sides dose-rate eddy current eddy current field electrical equation equivalent round example exposure exposure-time field strength Fill Factor film density Formulae in NDT fraction frequency geometric unsharpness given gives graph inches incident indices intensity inverse square law Iridium-192 source joule kV X-rays length linear absorption coefficient litres log tables logarithms to base mA.min magnetic flux density magnetic permeability material mathematical millimetres mR/h multiplied non-destructive testing notation obtained phase lag radiation radiographic shear waves Similarly simple Snell's Law source-to-film distance specimen thickness square root standard depth subtract symbols system of units trigonometric functions ultrasonic beam uranium wavelength written