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displacement sensors

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Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005931
EISBN: 978-1-62708-166-5
... monitoring and control of motion and position of various mechanical components with the help of mechanical limit switches, proximity sensors, and distance- and position-measuring devices. Using inputs from both flow meters and sensors, such as thermocouples and oxygen sensors, flow measurement control...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003062
EISBN: 978-1-62708-200-6
... Abstract Ceramic materials serve important insulative, capacitive, conductive, resistive, sensor, electrooptic, and magnetic functions in a wide variety of electrical and electronic circuitry. This article focuses on various applications of advanced ceramics in both electric power and...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006438
EISBN: 978-1-62708-190-0
... Accelerometers, velocimeters, and/or displacement sensors measure local displacements. Analysis includes amplitude, frequency, and differential measurements Changes may indicate weakening or failed structural components, alignment issues, bearing wear, shaft crack, imbalance. Indirect indication of degradation...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006676
EISBN: 978-1-62708-213-6
... structures transition to the amorphous phase. The operating principle is that in these transitions, a proportionally larger change takes place in the mechanical properties of a polymer than in its specific heat. A generic DMA setup ( Fig. 1 ) consists of a displacement sensor such as a linear variable...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006454
EISBN: 978-1-62708-190-0
..., corresponding to a surface displacement of approximately 25 pm (1 × 10 −6 μin.) for a high-sensitivity resonant sensor. This sensitivity is more than enough for most practical NDT applications. The sensor is coupled to the test piece with a grease, high-viscosity fluid, or adhesive bond. Using grease and...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006458
EISBN: 978-1-62708-190-0
... currents or applied fields and the elastic body. In special cases, these additional coupling mechanisms are the dominant forces generating elastic displacements in magnetic materials ( Ref 12 , 13 , 15 ). Some specific examples of using EMATs with magnetic materials are mentioned in the section “ Special...
Book Chapter

By Peter J. Blau
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003242
EISBN: 978-1-62708-199-3
... include measuring the length or thickness change of the test specimen, profiling surfaces to determine the wear depth or cross-sectional area worn away, using a precision balance to measure mass loss, measuring the relative displacement of specimens on the testing machine (in situ ) with a mounted sensor...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006439
EISBN: 978-1-62708-190-0
... image-sensing device, typically a camera with an image sensor such as a charge-coupled device (CCD) or complementary metal oxide semiconductor (CMOS) image sensor, receives light reflected off an object of interest through its lens and converts this light into a digital signal. A computer, embedded...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006445
EISBN: 978-1-62708-190-0
... sensor Signal analysis/signal evaluation Physical attribute checked Detection of cracks Detection of inclusions Advantages and limitations Resonance manual Resonance/physical ear Brain of the individual Total volume Limit varies widely with geometry. Mostly not possible Very flexible...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005928
EISBN: 978-1-62708-166-5
... pressure on both sides of a limiting orifice plate, are also commonly used to determine the flow rate. Both of these measurements require a known temperature and ure of the gas. Mass flow technology is used for some applications and is independent of temperature and pressure. Mass flow sensors use thermal...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006460
EISBN: 978-1-62708-190-0
... using short-pulse generation lasers. Gigahertz frequencies can be obtained easily. At the other end of the spectrum, because there is no mechanism to cause oscillation, the displacement or the force at the source is unipolar and has a spectrum starting from zero frequency, which will be cut only to some...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... electrical signals can take place in electrical connectors when subjected to fretting wear. Indeed, the huge developments in electronic control and data analysis imply the use of numerous sensors and therefore connectors right next to the engines (automotive, plane, train, etc.). Enduring high-frequency...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.9781627082907
EISBN: 978-1-62708-290-7
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... micrometers to kilometers Any solid structures including concrete, aircraft, nuclear components, etc. Vibration analysis Accelerometers, velocimeters, and/or displacement sensors measure local displacements. Analysis includes amplitude, frequency, and differential measurements Changes may indicate...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005660
EISBN: 978-1-62708-198-6
... may immediately appreciate. Such an effort speaks to the increasing role of systems versus components at the disposal of the implanted medical products designer. This section highlights four systems-facing concepts that are emerging on the scene: pumps, sensors, clinical effectiveness research, and...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006442
EISBN: 978-1-62708-190-0
... considerations. The Barkhausen signal is affected by magnetization rate ( Ref 11 ), level of magnetization ( Ref 12 ), and thereby the thickness of the sample ( Ref 3 ). Resolution is limited by the size of the sensing area, typically only as much as a few millimeters, due to the size of the sensor, which may...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005352
EISBN: 978-1-62708-187-0
... molds, feed die casting machines, cast electrogalvanizing anodes, and empty galvanizing kettles when repairs or desludging is required. Molten copper alloys are also transferred by pressure pump systems. Of the various kinds of mechanical pumping systems, a positive-displacement pressure pump is often...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003973
EISBN: 978-1-62708-185-6
... press with multiple rams. The rams converge on the workpiece in vertical and horizontal planes, alternately or in combination, and fill the die by displacement of metal outward from a central cavity developed by one or more of the punches. Figure 24 illustrates the multiple-ram principle, with central...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006449
EISBN: 978-1-62708-190-0
...-effect sensors, and magnetic-particle techniques), ultrasonic, acoustic emission, guided wave, laser testing, microwave, radiographic, thermal and infrared testing, x-ray diffraction, and visual inspection. Selection of the NDT method depends on product manufacturing specifications and requirements, the...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3