"Engineering Measurements - Methods and Intrinsic Errors" provides a valuable insight into the equipment and methods generally used in taking measurements, and helps engineers avoid or minimize the inaccuracies that can arise even when using highly accurate instruments. Many of the commonly used measurement methods are described, together with their pitfalls and problems. The authors also incorporate plenty of useful, practical examples. Although there are a number of very good texts already available on the subject of engineering measurements, most are quite theoretical and few are written by practising engineers in industry. Those written by industrialists often concentrate only on their specific subject area. There does not appear to be a general text covering theoretical and practical aspects of engineering measurements, and in particular covering the areas of errors and pitfalls associated with taking these measurements. This book is designed to fill the gap, and incorporates knowledge obtained from years of practical experience in industry and R&D by the authors and the various contributors.
"Engineering Measurements - Methods and Intrinsic Errors" is readable, practical and comprehensive. Any engineer involved in measurement, whether in manufacturing and process control, development, troubleshooting, or research, should find this guide a helpful everyday tool.
Part 1 Introduction: purpose and scope; errors - a discussion; terminology. Part 2 The human element: instrumentation; input errors; presentation errors; sources of data and information; learning from the unexpected. Part 3 Position, speed and acceleration measurement: linear position; angular position and rotation; linear speed and velocity; rotational speed and angular velocity; acceleration; vibration measurement and interpretation. Part 4 Force, torque, stress and pressure measurement: load cells; metal foil strain gauges; torque measurement; pressure gauges and pressure transducers; piezo-electric transducers for force, pressure and acceleration measurement; optical and fibre-optic based sensors; manometers; floating bell instruments; method for measuring small near-horizontal forces. Part 5 Temperature measurement: glass thermometers; dial thermometers; thermocouples; resistance thermometers; surface temperature, contact and non-contact methods; thermistors; temperature measurement by surface coating. Part 6 Fluid flow measurement: open channels, rivers and streams; steady flow in pipes; positive displacement meters; non-invasive methods; pulsating flows; velocity measurement; viscosity measurement. Part 7 Electrical measurements and instrumentation: review of electrical instruments, mainly meters; transducer outputs and instrumentation. Part 8 Measuring properties of materials: metal behaviour; effects of heat; static tensile and compression tests; creep (and relaxation) tests; hardness tests; impact tests; high strain rate tensile testing; fatigue tests; fracture toughness testing. Part 9 Surface profile, friction and wear measurements: surface profile measurements; friction measurement; wear measurement. Part 10 Internal combustion engine testing: engine variability; torque measurement; air flow measurement; fuel flow measurement; engine friction measurement; specialized techniques. Part 11 Computers: control and data acquisition; computer simulation; appendix.