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Deep Learning based Dimple Segmentation for Quantitative Fractography [article]

Ashish Sinha, K S Suresh
2020 arXiv   pre-print
To the best of our knowledge, this is one the first work in fractography using fully convolutional neural networks with self-attention for supervised learning of dimple fractography, though it can be easily  ...  In this work, we try to address the challenging problem of dimple detection and segmentation in Titanium alloys using machine learning methods, especially neural networks.  ...  Methodology Here we discuss the fractographic analysis for detection of dimples in fracture metal surfaces using various deep learning models.  ... 
arXiv:2007.02267v3 fatcat:asri5cb6cvhz5mbeyrlqxiaboa

Toward quantitative fractography using convolutional neural networks [article]

Stylianos Tsopanidis, Raúl Herrero Moreno, Shmuel Osovski
2019 arXiv   pre-print
The newly proposed method is based on a convolutional neural network algorithm for semantic segmentation.  ...  A quantitative analysis of fracture surfaces is of prime interest for both the scientific community and the industrial sector, bearing the potential for improved understanding on the mechanisms controlling  ...  Simple classification or object detection algorithms based on deep learning methods are not able to effectively tackle these challenges.  ... 
arXiv:1908.02242v2 fatcat:aiwd2buy75bdvcglggqmjruhda

Solid solution softening and enhanced ductility in concentrated FCC silver solid solution alloys

Yongjun Huo, Jiaqi Wu, Chin C. Lee
2018 Materials Science & Engineering: A  
Enrique Lavernia in facilitating the tensile test and TEM sample preparation, respectively, for our research activity.  ...  As shown in Fig. 8 , the morphology of fracture surface of (Ag)-10Ga exhibits highly ductile character, since a large amount of necking, shown in Fig. 8(a) , and many deep elliptical dimpled ruptures  ...  Microvoid formation and coalescence during the continued straining and plastic deformation are responsible for this dimpled rupture morphology [24] , and shape of the dimples are depending on the local  ... 
doi:10.1016/j.msea.2018.05.057 fatcat:n3drus4hizddlokm4a3mjacs7q

Evaluation of test protocol variables for dental implant fatigue research

Cornell K. Lee, Matthias Karl, J. Robert Kelly
2009 Dental Materials  
There are two areas of accelerated testing: quantitative and qualitative.  ...  The technique used to analyze this record is known as fractography and isperformed using both a light and scanning electron microscope (SEM).  ...  Chi-Square statistical analysis Fractures by environment and frequency l"l~ ___ Cycles/jlffi integrated over growth distance = total cycles for crack growth over integrated distance  ... 
doi:10.1016/ pmid:19646746 fatcat:b3zul3a3jre2lbvjf5r6zmnuwm

Influence of Previous Angular Deformation on Cyclic Fatigue Resistance of K3XF Instruments

Riyahi Abdullah
The crack-initiation sites and the percentage of dimple area of the whole fracture cross-sectional area were recorded.  ...  After torsional preloading, the total number of revolutions to failure (Nf) was measured for each file. The fracture surface of each fragment was examined with a scanning electron microscope.  ...  The patterns established in this study for the fractured files supply a consistent base for the interpretation of fracture occurring under complex loading.  ... 
doi:10.14288/1.0167342 fatcat:slgp2b6pgneg5eibupmdmg625u


Thaneshan Sapanathan
2019 Figshare  
Innovative manufacturing processes are considered as the alternate solutions to produce materials for the growing demand.  ...  Meanwhile, severe plastic deformation (SPD) processes are well known for delivering high strength processed materials because of their capability of producing materials with significant grain refinement  ...  These pull outs and dimples were indicative of ductile fracture for aluminum specimen which were absent in fractography of the AFSCE processes composite material interface inFig.3-13c.  ... 
doi:10.6084/m9.figshare.8064107 fatcat:ut6oqeggencytfuqluargte3te

Simulating fatigue crack growth in spiral bevel gears

Lisa E Spievak, Paul A Wawrzynek, Anthony R Ingraffea, David G Lewicki
2001 Engineering Fracture Mechanics  
Tooth #11 contained a "short" notch (~4 mm long x ~lmm deep), and was the initial flaw from which the numerical simulations were based.  ...  The time from detectable flaw to failure is usually insignificant.  ...  In rotorcraft applications, a crack's trajectory determines whether the gear failure will be benign or catastrophic for the aircraft.  ... 
doi:10.1016/s0013-7944(00)00089-8 fatcat:ejrcolngcvcflpctzbbyvq3w4y

MAM Volume 17 Supplement S1 - EXPO Issue

2011 Microscopy and Microanalysis  
This tutorial will be designed for anybody interested in learning about APT with no particular required background.  ...  First specimen preparation techniques for single particles~deep stain, vitreous ice! will be presented and the selection of imaging conditions including low-dose imaging.  ... 
doi:10.1017/s1431927611012049 fatcat:ws4y2lfvxzhf5id574tcb7cw6i

Preview: 1996 MRS Fall Meeting/ICEM-96

1996 MRS bulletin  
ABB Extrel's instruments are used to monitor and control the chem- istry of processes and look for contam- inates that simple residual gas analysis cannot detect.  ...  Computer-aided applications for EM and light microscopy include particle size and shape analysis, metallography, fractography, coatings thickness measurement, critical dimension measurement, stereo depth  ...  MRS Fall Meeting Exhibit We design and fabricate both standard and custom capillary-based optics for use with x-rays and neutrons. Options for focusing, collimating, and beam bending are available.  ... 
doi:10.1557/s0883769400031663 fatcat:7sb6utmkrrc7pkqss6b2uc5peu

William L. Johnson Named 1998 MRS Medalist for Metallic Glass

1998 MRS bulletin  
For the SEM/EDS market, Kevex has long been a leader in detector technology. Kevex pioneered the Atmosphere Thin Window that has given the analytical world superior light element detection.  ...  For general vision-based experiments, nothing beats EyeSpy for performance, flexibility and affordability. Journal of Materials Science.  ...  Computer-aided applications for EM and light microscopy include particle size and shape analysis, metallography, fractography, coatings thickness measurement, critical dimension measurement, stereo depth  ... 
doi:10.1557/s088376940002964x fatcat:i7em22uupzcmvofugqz7ocuon4

Eutectic modification of Al-Si casting alloys [article]

Jenifer Barrirero, Universität Des Saarlandes, Universität Des Saarlandes
Strong and tough alloys based on aluminum need to be designed and optimized for this purpose.  ...  Lättviktskonstruktioner spelar också en viktig roll för elektrifieringen av transportsektorn genom att kompensera för batteriernas vikt och öka energieffektiviteten.  ...  Fractography shows a direct relationship between the size and aspect ratio of the silicon particles and the dimples implying that the elongation of silicon particles is transmitted to the dimples and the  ... 
doi:10.22028/d291-29834 fatcat:bshwxjsfkbhifbzdrgm5ra55ty

Characterization of Industrial Powder Metallurgy Produced 410L ODS Steel

Asim Zeybek
Materials were based on 12 Cr 410L steel.  ...  Tensile tests and creep tests were performed for mechanical characterization.  ...  The fractography analyses show inclusions inside the dimples which is the sign of microvoid nucleation and propagation.  ... 
doi:10.21954/ fatcat:3dbethzybnh6zhnejwi6lvqtne

Effect of chill condition and grain refinement on the microstructure and mechanical properties of B319 aluminum alloy

Vishank Kumar
The demand for lightweight vehicles continues to stimulate extensive research into the development of lightweight aluminum alloys for automotive castings and associated optimization of the processing parameters  ...  Industrial grain refiners used for aluminum castings are generally master alloys of Al, Ti, B and C with specific stoichiometric ratio.  ...  Fractured samples were carefully sectioned using a diamond saw and were characterized under SEM for fractography along with X-EDS to detect the phase(s) responsible for fracture.  ... 
doi:10.14288/1.0074445 fatcat:zov7fcct4vcjbk2ti5mhlldrty

Thermal effects on the dynamic damage and fracture of a dual phase automotive steel

Sarath Chandran, Wenqi Liu, Junhe Lian, Sebastian Münstermann, Patricia Verleysen
Includes new results on material response and development of techniques, methods, and diagnostics for the study of materials in the dynamic regime Journal of the Dynamic Behavior of Materials is a peer  ...  Experimental techniques will include, but not be limited to, small-scale tests for constitutive response of material such as Split Hopkinson Pressure Bar, Kolsky Pressure Bar, gas-gun and powder-gun driven  ...  Kölble for stimulating discussions. Furthermore, we thank BMVg and BAAINBw for funding and H. Sohn for his support.  ... 
doi:10.18154/rwth-2020-02900 fatcat:s462kpl6ujdpxmi4rqouc2c7ei

Phase transformations in welded supermartensitic stainless steels

Dominique Carrouge, Apollo-University Of Cambridge Repository, Apollo-University Of Cambridge Repository
Supermartensitic stainless steels have recently been introduced in the oil and gas industries to substitute more expensive duplex stainless steels for onshore and offshore tubing applications.  ...  could be detected.  ...  The latter operation is made using an algorithm which implements a learning method based on Bayesian statistics. 8.2.c Bayesian method In regression analysis, the most probable values of the weigths  ... 
doi:10.17863/cam.14251 fatcat:medbbe4zv5gudjmbqoompbo65y
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