Full-Field Dynamic Displacement and Strain Measurement Using Advanced 3d Image Correlation Photogrammetry: Part 1

Schmidt, Tim; Tyson, John; Galanulis, Konstantin

doi:10.1111/j.1747-1567.2003.tb00115.x

Cited by 197 publications

(110 citation statements)

References 5 publications

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“…Details of this procedure can be found elsewhere. [9,17,18] Post-mortem fracture surfaces were observed by SEM and also metallographically prepared to observe the fracture path through the sample cross section.…”

Section: Methodsmentioning

confidence: 99%

Improving the Mechanical Properties of the Fusion Zone in Electron-Beam Welded Ti-5Al-5Mo-5V-3Cr Alloys

Marvel

Sabol

Pasang

et al. 2017

Metall Mater Trans A

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It is well-known that x-phase precipitates embrittle Ti-5553 alloys and that x-phase embrittlement can be overcome with appropriate heat treatments. However, the microstructural evolution of electron-beam welded Ti-5553 is not as understood as compared to the cast or wrought material. This study compared the microstructures of as-welded and post-weld heat-treated specimens by scanning and transmission electron microscopy, and similarly compared the localized mechanical behavior of the fusion zones with microhardness testing and digital image correlation coupled tensile testing. The primary observations were that the embrittling x-phase precipitates formed upon cooling, and could not be fully solutionized in a single-step treatment of 1077 K (804°C) for 1 hour. It was also discovered that nanoscale a-phase precipitates nucleated after the single-step treatment, although they were small in number and sparsely distributed. However, a two-step heat treatment of 1077 K (804°C) for 1 hour and 873 K (600°C) for 4 hours completely solutionized the x-phase and produced a dense network of 2-lm-wide a-phase plates, which significantly improved the mechanical properties. Overall, this study has shown that post-weld heat treatments improve the strength and ductility of electron-beam welded Ti-5553 alloys by controlling x-and a-phase evolution.

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Section: Methodsmentioning

confidence: 99%

Improving the Mechanical Properties of the Fusion Zone in Electron-Beam Welded Ti-5Al-5Mo-5V-3Cr Alloys

Marvel

Sabol

Pasang

et al. 2017

Metall Mater Trans A

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“…Uygulanan yüklere bağlı olarak oluşan yüzey değişimleri veya yer değiştirme hareketleri iki kamera tarafından kaydedilir. 11 Bu sistemde dişe sıkıca adapte olan bir prob ile okluzal yönde kuvvet uygulanmaktadır. Uygulanışında; öncelikle protez veya dişler alkolle temizlenir ve üzerine grafit sprey şeklinde uygulanan ve düzensiz yüzey özelliği gösteren, yansıtma özelliği olmayan rezin uygulanır.…”

Section: Introductionunclassified

Methods of Evaluating The Dental Implant Stability

Öncü¹,

Büyükerkmen²

2015

EÜ Dişhek Fak Derg

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ÖZET İmplant stabilitesi osseointegrasyonun başarısını gösteren klinik bir göstergedir ve uzun dönem implant başarısı için şarttır. Denta implantların başarısını değerlendirmek için başvurulan önemli parametrelerden biri implantın kemik içinde stabil olup olmadığının değerlendirilmesidir. İmplant stabilitesi 2 aşamada meydana gelir. Primer implant stabilitesi; lokal kemik kalitesine ve miktarına, kullanılan implant türüne ve yerleştirme tekniğine bağlı mekanik bir olgudur ve cerrahi sırasında oluşan stabilitedir. İkincil stabilite ise implantın iyileşme sürecinde, asıl implant-kemik bağlantısını tarif eder ve implant etrafındaki kemikte iyileşmenin tamamlanması ve remodeling sonucunda oluşan esas stabilitedir. Osseointegrasyonu değerlendirmek için kullanılan histolojik yöntemlerin invaziv olması nedeni ile klinik olarak tercih edilen dental implant stabilite testleri ve radyografiler daha kullanışlı ve kolay yöntemlerdir. Bu derlemede implant stabilitesini değerlendirmek amacı ile kullanılan çeşitli yöntemler hakkında bilgi verilecektir. Anahtar Kelimeler: Dental İmplant Stabilitesi, osseointegrasyon, Osstell, Periotest ABSTRACT Implant stability is one of the important factors to provide successful osseointegration and is obligatory for the longtermsuccess.. Implant stability can be defined as the absence of clinical mobility, which is also the suggested definition of osseointegration. Primary implant stability at placement is a mechanical phenomenon that is related to the local bone quality and quantity, the type of implant and placement technique used. Secondary implant stability is the increase instability attributable to bone formation and remodeling at the implant

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“…The ARAMIS System is an optical system for measurement of 3D deformation and strain [10]. Precision of this system (strain: 0.01 %) had been confirmed by gauge.…”

Section: Details and Principles Of The Aramis Systemmentioning

confidence: 99%

“…The value for the changes in positions of the four corners of the facets and the centers of the facets between images of photographs (taken after different pass numbers) were measured. The direction of the shear angle of facets (shear in the following) and tensile strain of the facet was obtained using the difference from the initial position (initial coordinate) and the deformation gradient tensor [10].…”

Section: Aramis Analysismentioning

confidence: 99%

Strain distribution in asphalt mixtures during the wheel tracking test at high temperatures

Moriyoshi

Takahashi²,

Ikeda³

et al. 2013

Construction and Building Materials

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In general rutting in asphalt pavements occurs at high temperatures and cracks occur at cold temperatures. It has been believed that longitudinal cracks mainly arise due to the shear of moving wheels at high temperatures. This research performed wheel tracking tests at 45 C on asphalt samples in holders which at one end consists of transparent glass. The distribution of the tensile and shear strains using the ARAMIS System for gathering data of the exposed end (30 5 cm) of the specimens visible through the transparent glass was measured. Thereafter, specimens (5 8 2.5 cm) cut from large specimen (5 30 30 cm) for CT scanner. The width of crack was also analyzed by CT scanner in three dimensional. It was found that the rutting depth in all specimens after 1 h (2400 wheel passes) at 45 C was smaller than 1 mm, but that the tensile strains in all specimens at 1 hour were 25,000 10 6 (2.5%) or larger and a strain of 3.69% which corresponds to a longitudinal crack width of 0.555 mm by CT analysis and ARAMIS system. It was also found that the cracks at the high temperature under the moving wheels were mainly caused by the tensile strain rather than shear strain and the load spreadability in mixtures depends upon the type of mixture and properties of asphalt. It is concluded that both methods are useful to evaluate the damage of mixture

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Full-Field Dynamic Displacement and Strain Measurement Using Advanced 3d Image Correlation Photogrammetry: Part 1

Cited by 197 publications

References 5 publications

Improving the Mechanical Properties of the Fusion Zone in Electron-Beam Welded Ti-5Al-5Mo-5V-3Cr Alloys

Improving the Mechanical Properties of the Fusion Zone in Electron-Beam Welded Ti-5Al-5Mo-5V-3Cr Alloys

Methods of Evaluating The Dental Implant Stability

Strain distribution in asphalt mixtures during the wheel tracking test at high temperatures

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