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external optical inspection

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110010
EISBN: 978-1-62708-247-1
... reflectometry, and electro-optical terahertz pulse reflectometry. The final step is the step-by-step inspection and deprocessing stage that begins once the defect has been imaged. electrical verification electro-optical terahertz pulse reflectometry external optical inspection infrared microscopy IR...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110042
EISBN: 978-1-62708-247-1
... concludes with laser microscopy techniques such as thermal induced voltage alteration and external induced voltage alteration. brightfield illumination darkfield illumination failure analysis infrared microscopy laser microscopy optical microscopy solid immersion lenses ultraviolet microscopy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... Abstract The inspection of castings normally involves checking for shape and dimensions, coupled with aided and unaided visual inspection for external discontinuities and surface quality. This chapter discusses methods for determining surface quality, internal discontinuities, and dimensional...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720021
EISBN: 978-1-62708-305-8
... Abstract Visual inspection is the most important method of inspection of materials. This chapter describes the procedures involved in visual inspection such as identification markings, identification of defects caused by heating problems, scaling of materials, cracking characterization, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050245
EISBN: 978-1-62708-311-9
... Abstract This chapter discusses the methods and procedures used for inspecting induction-hardened parts. It provides information on hardness and case depth measurements, nondestructive testing and surface analysis, the effect of various hardening errors, and relevant test standards. case...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720365
EISBN: 978-1-62708-305-8
... necessary for visual inspection is a bench on which to place the forging and suitable cranes or hoists for forgings that are too heavy to lift by hand. Good and well controlled lighting conditions are essential. Optical aids such as magnifying glasses that can magnify up to about ten diameters are often...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
... Abstract This chapter provides an overview of the various inspection methods used with metals and alloys, namely visual inspection, coordinate measuring machines, machine vision, hardness testing, tensile testing, chemical analysis, metallography, and nondestructive testing. The nondestructive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030360
EISBN: 978-1-62708-282-2
... data that can be relied on by the plant operator in setting future operating and inspection schemes. Visual inspection is still the bedrock of most inspection regimes. In addition to traditional thorough inspection by the naked eye, visual inspection can be assisted by such optical aids as...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
...; versatile; film provides record of inspection Radiation safety requires precautions; expensive; detection of cracks can be difficult unless perpendicular to x-ray film. Pipeline welds for penetration, inclusions, and voids; internal defects in castings Visual optical Surface characteristics such as...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110603
EISBN: 978-1-62708-247-1
... create counterfeits. These include relabeling, refurbishing, and repackaging. The article presents a systematic inspection methodology that can be applied for detecting signs of possible part modifications. The methodology consists of external visual inspection, marking permanency tests, and X-ray...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110499
EISBN: 978-1-62708-247-1
... issues and chip cracks. Parametric test data from contact test, input leakage and I DD test together with optical inspection of the decapsulated part reveal the problems most of the time. On the other hand, other problems due to local defects in the chip internal supply networks that cause massive...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720161
EISBN: 978-1-62708-305-8
... Abstract This chapter describes the methods and equipment applicable to metallographic studies and discusses the preparation of specimens for examination by light optical microscopy. Five major operations for preparation of metallographic specimens are discussed: sectioning, mounting, grinding...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720139
EISBN: 978-1-62708-305-8
... Abstract The overall chemical composition of metals and alloys is most commonly determined by x-ray fluorescence (XRF) and optical emission spectroscopy (OES). High-temperature combustion and inert gas fusion methods are typically used to analyze dissolved gases (oxygen, nitrogen, and hydrogen...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130503
EISBN: 978-1-62708-284-6
... surface in Fig. 13 showing dimpled intergranular fracture Fig. 15 Optical microscopy of grain structure of electroslag weld metal. Original magnification: 50× Fig. 12 Side-bend test failure of weld Fig. 5 Effect of hydrogen content on hydrogen-assisted cracking (HAC) for...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110587
EISBN: 978-1-62708-247-1
... instances, confirming the reported failure mode (i.e. leakage or short, open circuit, etc.) is the next important step. Next non-destructive internal and external examinations by optical microscopy, X-ray, C-mode Scanning Acoustic Microscopy (C-SAM) and so on, should be performed. Performing basic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110001
EISBN: 978-1-62708-247-1
... docking has the advantage in decoupling tester vibrations. In general, a tester requires to be cooled and it can be accomplished by using an integrated fan or an external water chiller, both of which causes vibrations. The situation is worse on fan-cooled testers. Such vibrations result in optical image...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110550
EISBN: 978-1-62708-247-1
... stage to create a topographic map of the surface. Figure 14 shows examples of topographic maps obtained from an optical profilometer. Figure 14 Example of a topography map and line profile obtained from a 2.5D module with an optical profilometer Inspecting and recording images with a...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910475
EISBN: 978-1-62708-250-1
... Limitations Metallography and fractography A.1 Macroexamination Examination of bulk failure or sample by eye or low-power optical device General incidence/extent of failure/damage. Juxtaposition of failure/damage. Orientation and direction of failure/damage (e.g., beach markings on fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
... are often performed to predict when the next internal or external inspection should be performed. Typical life-limiting mechanisms include stress-corrosion cracking, fatigue, and thermal fatigue. Welded structures that could initiate a crack are often susceptible to these mechanisms. The leak-before...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110219
EISBN: 978-1-62708-247-1
.... : “ Arbitrary Waveform Stimulation and TRTR Analysis for Advanced 3D LIT Inspection ” Proc. 4th CAM Workshop , Halle, Germany , 2019 [9] Brand S. et al. : “ Advanced 3D localization in Lock-In Thermography based on the analysis of the TRTR (Time-Resolved Thermal Response) received upon arbitrary...