1-20 of 36 Search Results for

specimen geometry

Sort by
Journal Articles
AM&P Technical Articles (2013) 171 (11): 13–18.
Published: 01 November 2013
... transition regime and test specimen geometries when measuring the toughness of weld metal and heat-affected zones. This article identifies several factors that are not fully addressed in most fracture toughness test standards and explains how they may influence calculated values obtained from ferritic...
Journal Articles
AM&P Technical Articles (2022) 180 (7): 38–41.
Published: 01 October 2022
... is shown in Fig. 1. The method essentially has three components: (1) a standard tensile test specimen geometry and a test protocol to obtain the surface strain fields in the test specimen using digital image correlation (DIC); (2) a library of simulations of the tensile test specimen loading protocol using...
Journal Articles
AM&P Technical Articles (2019) 177 (2): 27–30.
Published: 01 February 2019
... of the normalization method in J-R curve testing, the authors developed an open source software with a user-friendly graphic interface to perform automated J-R curve analysis. The software can analyze the four most commonly used fracture toughness specimen geometries; i.e., compact tension (C(T disk compact tension...
Journal Articles
AM&P Technical Articles (2016) 174 (1): 18–21.
Published: 01 January 2016
... the exact part geometry. It is possible that specimen size (and subsequent microstructure, heating, and cooling rates) affects material properties. No work was done to correlate the effect of specimen size or geometry. Vents were nonstructural parts made from a high-strength alloy, so the effects...
Journal Articles
AM&P Technical Articles (2013) 171 (10): 18–21.
Published: 01 October 2013
... with a beam angle of 60°. Plate weld Fig. 9 Comparison of a 52° beam angle on flat geometry (top) and cylinder geometry (bottom). 52° beam Pipe seam weld 52° beam ber of experimental specimens and mock-ups needed for technique and procedure validation, completely eliminating these in certain cases...
Journal Articles
AM&P Technical Articles (2012) 170 (4): 17–21.
Published: 01 April 2012
... and TEM specimen geometries the APT specimen is a sharp ~100-nm diameter needle, while the TEM specimen is a thin foil (~100-nm thick and 20 mm long). (a) Penetrative oxidation Cr carbide (b) Cr carbide Oxide filaments 50 nm (c) Cr2O3 platelets 50 nm Mo oxide sample (Fig. 2b) is cut out and extracted from...
Journal Articles
AM&P Technical Articles (2015) 173 (4): 18–21.
Published: 01 April 2015
... principle to enable fatigue testing of metal specimens. Testing at high frequencies may be done rapidly, enabling greater overall test throughput. component-specific gripping arrangements and fixturing, while component geometries often result in specimens with small final dimensions. For these small...
Journal Articles
AM&P Technical Articles (2013) 171 (10): 15–17.
Published: 01 October 2013
... diameter of 12.5 mm a typical geometry often used in tensile tests. The second geometry was a round bar sample of a nickel alloy (IN100) with a gage diameter of 4.8 mm, to test the ability to provide EBSD data from a curved surface. The specimen was 145 mm long (Fig. 2) with an outer bar di- ameter of 25...
Journal Articles
AM&P Technical Articles (2022) 180 (5): 24–26.
Published: 01 July 2022
... to confirm satisfactory performance in service. processes and parts, AM components need not only more data points through testing greater sample sizes, but also require more 25 comprehensive data from each specimen. This requires both a quantitative increase in mechanical tests and a qualitative improvement...
Journal Articles
AM&P Technical Articles (2022) 180 (3): 19–24.
Published: 01 April 2022
...) was developed and commercialized by Plastometrex required for PIP testing per stress-strain curve is 72 mm3, whereas an ASTM E8 sub-size specimen (prior to machin- in the U.K. This unique testing meth- ing to test coupon geometry) requires od offers the materials science, engi- a volume of 2100 mm3 per stress...
Journal Articles
AM&P Technical Articles (2017) 175 (7): 16–21.
Published: 01 October 2017
... offer engineers new tools with which to select materials and geometries for specific applications, through the ability to create unique geometries that are unable to be machined or cast, exploiting novel material properties, and enabling new composite materials to add flexibility to their designs...
Journal Articles
AM&P Technical Articles (2014) 172 (7): 20–24.
Published: 01 July 2014
... conductivity of copper presents challenges for direct AM processes, fully dense copper components with complex geometries have been demonstrated. Of particular interest is the ability to use AM methods to fabricate internal cooling channels and mesh structures to optimize thermal management. This article...
Journal Articles
AM&P Technical Articles (2019) 177 (8): 29–31.
Published: 01 November 2019
... the nucleus of the atom. Under normal conditions, the electrons in a specific shell have discrete pieces and detector distance and height have been optimized to place the detector as close as possible to the specimen terials characterization and is common- energies. As an electron beam strikes for the highest...
Journal Articles
AM&P Technical Articles (2013) 171 (4): 21–24.
Published: 01 April 2013
... by typical optical imaging elements. However, applying DIC to scanning electron images requires consideration of the more complex distortions created by rastering of the electron beam, the time-dependent nature of image capture, the complex geometry *Joint Student Member of ASM International ** Member of ASM...
Journal Articles
AM&P Technical Articles (2020) 178 (3): 63–66.
Published: 01 April 2020
... textiles can be a monofilament, a single-ply yarn spun from microfilaments, and multi-ply yarns. (b) The contractile knitted textile consists of interlacing courses of knit and purl loops. The loop geometry is defined by the loop enclosed area (Al) and the wire diameter (d). (c) Force-knit length profiles...
Journal Articles
AM&P Technical Articles (2013) 171 (4): 17–20.
Published: 01 April 2013
... developed after the Tensile sample Displacement field 1980s also advanced NDT technology. Digital image correlation (DIC), comparing images of the same specimen before and after deforma- tion, allows measuring displacement and strain fields without contacting the specimen surface and provides high...
Journal Articles
AM&P Technical Articles (2014) 172 (11): 40.
Published: 01 November 2014
...-treated parts, explains Sisson. treating industry needs rapid, accurate nondestructive techniques to measure surface hardness and case depth on carburized steels for process verification and control. Current measurement methods require destructive testing with traveler specimens that cannot always...
Journal Articles
AM&P Technical Articles (2016) 174 (6): 30–31.
Published: 01 June 2016
... Another challenge with the traveler specimen measurement method is that it often requires periodic production part cut-ups to validate the hardness and case depth of parts The Center for Heat Treating Excellence (CHTE) at after carburization, especially for critical shaft and gear teeth Worcester...
Journal Articles
AM&P Technical Articles (2022) 180 (3): 37–39.
Published: 01 April 2022
... beneath the specimen surface is measured as the load is applied to the indenter. From the known geometry of the indenter, the size of the area of contact is determined. FEATURE iTSSe TSS 39 ADVANCED MATERIALS & PROCESSES | APRIL 2022 A nanoindentation test is usually performed as a depth-sensing...
Journal Articles
AM&P Technical Articles (2016) 174 (4): 16–20.
Published: 01 April 2016
... equipped with a patented, flexurally stiff hollow profile with a guide cylinder, while long crosshead guides with a large surface area provide extremely precise guidance. This combination minimizes undesirable mechanical influences on the specimen. EM testing systems are particularly beneficial...