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vibration condition monitoring

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Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006400
EISBN: 978-1-62708-192-4
...Abstract Abstract This article introduces the concept of condition monitoring (CM) and summarizes various techniques used for CM across the industrial sectors. The techniques include visual inspection, performance monitoring, vibration condition monitoring, vibration condition monitoring...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006402
EISBN: 978-1-62708-192-4
... ( Ref 8 ). Fig. 2 Condition monitoring with vibration analysis, exemplified for rotary machines Laboratory and Specimen Testing Laboratory friction and wear experiments are mainly designed for categories V and VI of tribotests. In tests of category V, test-specimen models are used...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006430
EISBN: 978-1-62708-192-4
..., and is, unlike other technologies such as vibration analysis, relatively unaffected by load. This provides an ability to trend electrical machine and drivetrain wear over time without having to duplicate the operating conditions. Evaluation of Broken Rotor Bars The most publicized capability of ESA...
Book Chapter

Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006685
EISBN: 978-1-62708-213-6
... and those for pyridine on Co-Mo-γ-Al 2 O 3 ( Ref 73 ) was noted. Raman spectroscopy is finding widespread use in the characterization of corrosion processes on metal surfaces. Corrosion can be easily monitored under gas phase or liquid conditions. The principal advantage of using Raman spectroscopy...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001736
EISBN: 978-1-62708-178-8
... is the identification of components that may be present in only 5 to 10% concentrations. Studies of various types of degradation and polymerization have involved observing changes in vibrational features that affect only a small part of the polymer. In such cases, it is advantageous to monitor vibrational bands...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006444
EISBN: 978-1-62708-190-0
..., compliant mounts such as rubber that reasonably approximate a free-boundary condition, and extremely stiff, heavy mounts that approximate a fixed-boundary condition, tend to vary less and are more amenable to modeling. Use quantitative vibration monitoring (even just at a single point) to evaluate...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006368
EISBN: 978-1-62708-192-4
...Abstract Abstract Vibroacoustic analysis of mechanical systems has an important role in the engineering discipline. This can be used as a monitoring tool to obtain insights about the condition of a system, identify its probable defects, and determine the time window that the maintenance should...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006658
EISBN: 978-1-62708-213-6
... machinery in the same building, people walking in the area, and freeways and airports in the area. Structural vibrations are reduced with active and passive vibration tables. Acoustic vibrations are transmitted through the air. Sources of acoustic vibrations include fans, air conditioners, people...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004155
EISBN: 978-1-62708-184-9
...-accelerated corrosion Monitoring The field monitoring equipment shown in Fig. 9 can be used to diagnose and prevent many common LP turbine corrosion and deposition problems ( Ref 68 ). In addition, there are monitors available to detect vibration and provide vibration signatures of the whole...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003315
EISBN: 978-1-62708-176-4
... oscillator. The converter can be an electrodynamic vibrator or any other vibrator capable of ultrasonic frequencies. A piezoelectric pickup is placed against the opposite end of the bar to monitor the amplitude of vibration. For most pure metals and alloys, the bar should be about 100 to 150 mm (4 to 6...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... of the ultrasound; thus, it is important to consider how to optimize generation methods. Fig. 12 Ultrasound generation by laser pulse. Ultrasound is generated in an organic composite by the absorption of energy from a pulsed laser, and the resulting surface vibrations can be monitored with a detection laser...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003436
EISBN: 978-1-62708-195-5
... surface vibrations can be monitored with a detection laser and sensitive interferometer. The resulting signals are equivalent to conventional pulse-echo ultrasonic signals. τ, rise time; β λ , wave-length-dependent optical absorption coefficient. Fig. 13 Laser ultrasonic signal from a 3 mm (0.12...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003669
EISBN: 978-1-62708-182-5
... such conditions. The tests, designed by ASTM as G32, G73, G75, and G76, define specimen preparation, test conditions, procedures, and data interpretation. The article examines the relative influence of various test parameters on the incubation and intensity of cavitation, including temperature, pressure, flow...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005243
EISBN: 978-1-62708-187-0
.... This includes the sand muller or mixer, sand cooling equipment, magnetic separation and/or screening, and dust collection equipment. The coating action and strength development is controlled by the condition of the mixing and/or the muller equipment. Failure to monitor the equipment and to maintain it adds...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003710
EISBN: 978-1-62708-182-5
... under a variety of environmental conditions. However, unraveling corrosion mechanisms is not always a straightforward process. An understanding of the mechanistic details requires conducting experiments under simulated and controlled laboratory conditions. Ideally, it requires real time monitoring...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006574
EISBN: 978-1-62708-290-7
...Summary of process parameters used to fabricate welds for various materials Table 1 Summary of process parameters used to fabricate welds for various materials Alloy Normal force Vibration amplitude, μm Travel speed Preheat N lbf cm/min in./min °C °F Al alloys ( Ref 24...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006363
EISBN: 978-1-62708-192-4
... cost. The cutting fluids and their effect on tool life are also discussed. The article discusses machining process dynamics and corresponding vibrations. It contains a table that provides a summary of high-pressure coolant research. machining cutting force metal cutting fluids high-pressure...
Book Chapter

Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006358
EISBN: 978-1-62708-192-4
... of lubricant; vibration detection system; thermocouples monitor temperature (typically 50–60 °C, or 120–140 °F). 7 (c) Rolling-contact testing apparatus ( Fig. 5 ) Two hemispherically ground, toroidal rollers loaded against a round bar; 40:1 ratio of roller diameter to bar diameter; 2.7–5.5 GPa (390–800...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.9781627081900
EISBN: 978-1-62708-190-0
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006469
EISBN: 978-1-62708-190-0
.... It also describes how specific material conditions produce and modify A-scan indications. The article provides information on the controls and their functions for the display unit of the electronic equipment. It describes the techniques used for the identification and characterization of flaws, namely...