Stress Concentration Research Papers - Academia.edu (original) (raw)

Top Papers
Most Cited Papers
Most Downloaded Papers
Newest Papers
People
- by
- •
- Materials Engineering, Mechanical Engineering, Aerospace Engineering, Finite element method
- by Brett Denny
- •
- Engineering, Civil Engineering, Stress field, Engineering Geology

Numerous cases of failures of different aircraft components and parts with abundant data and in-depth analysis of causes, development and manifestation of failure scan be found in the literature. The check-up of the integrity of aircraft components is carried out by trained and competent personnel.The regular inspection of particular components is scheduled depending on the number of flying hours, lifetime and priority as specified by strict international regulations

- by Dyrian Haryatno
- •
- Aluminium Alloy, Stress Concentration
- by Wu Jesse
- •
- Adolescent, Medicine, Humans, Cancellous bone
- by Mohammed Zikry
- •
- Materials Engineering, Mechanical Engineering, Microstructure, Modeling
- by Mahmood Shokrieh
- •
- Mechanical Engineering, Civil Engineering, Materials Science, Fatigue

A new methodology is proposed to correlate the upper shelf energy (USE) of full-size and subsize Charpy specimens of a nuclear reactor pressure vessel plate material. The methodology appears to be more satisfactory than those methodlogies proposed earlier. The USE was normalized by a normalization factor involving the dimensions of the Charpy specimen, the elastic stress concentration factor, and the plastic constraint at the notch root. The normalized values of the USE were found to be invariant with speciment size. In addition, it was also found that the ratio of the USE of unirradiated to that of irradiated materials was approximately the same for full-, half-, and third-size specimens. The ductile-to-brittle transition temperture (DBTT) increased due to irradiation at 150°C to a nominal fluence of 1.0 × 1019 n/cm2 (E >MeV) by 78, 83 and 70°C for full-, half-, and third-size specimens, respectively. These shifts in DBTT appeared to be independent of specimen size and notch geometry.

- by aravind kumar
- •
- Materials Engineering, Nuclear Materials, Nuclear, Nuclear reactor
- by Nobumichi Tamura
- •
- Engineering, Technology, Atomic Force Microscopy, Damage Mechanics
- by Jin-Ho Choi
- •
- Engineering, Composite Material, Composite structures, Experimental Study
- by Thomas Mackin
- •
- Materials Engineering, Mechanical Engineering, Civil Engineering, Failure Analysis

Sommario Scopo principale del presente lavoro è di analizzare e descrivere lo schema di funzionamento e lo stato tensionale di accoppiamenti albero mozzo realizzati per serraggio e presenti nelle sospensioni anteriori motociclistiche. Sono stati analizzati sia gli accoppiamenti tra il trapezio ed il gambale della sospensione (morsetti trapezio), realizzati mediante l'impiego di una o due viti di serraggio, sia gli accoppiamenti tra la gamba ed il perno ruota (morsetti gamba), con una vite di serraggio. Il modello di calcolo proposto per tali accoppiamenti è stato determinato utilizzando analisi agli elementi finiti in appoggio alla teoria classica di De Saint Venant, per ottenere un fattore teorico di concentrazione delle tensioni presente sul mozzo dovuto alla presenza di discontinuità geometriche, come le lamature ed i fori di alloggiamento delle viti. Il risultato principale consiste nel disporre di un modello di calcolo completo che permette di progettare, verificare ed ott...

- by Dario Croccolo
- •
- Stress field, Finite Element, STRESS CONCENTRATION FACTOR, Stress Concentration
- by Bao-Guo Chen
- •
- Engineering, Civil Engineering, Geotechnical Engineering, New Orleans
- by Arturo Abundez Pliego
- •
- Stress analysis, Trabecular Bone, Qualitative Analysis, Cross Section
- by Giosue Giacoppo
- •
- Fuel Cell, Thin Film, PEM fuel cell, Experimental Evaluation
- by Ibrahim Ahmad and +1
- •
- Scanning Electron Microscopy, Atomic Force Microscopy, Surface Roughness, Plasma Etching
- by Inge Lotsberg
- •
- Engineering, Civil Engineering, Design, Manufacturing
- by Hassan Mahfuz
- •
- Materials Engineering, Structural Integrity, Epoxy Resin, Stress Concentration
- by Milorad D Milovančević and +1
- •
- Materials Engineering, Mechanical Engineering, Civil Engineering, Finite element method
- by MOHAMED BOUCHAMA
- •
- Mechanical Engineering, Finite element method, Numerical Method, Optimization
- by R. Dudek
- •
- Viscoelasticity, Glass, Finite Element, Elasticity

This paper reviews research of different researchers on the failure and optimization of pressure vessels. The study includes various reasons for failure of vessel as stress concentration at junctions, excessive deformation due to improper support, reinforcing, end connections and so on. The literature reviewed shows growing interest in optimization. The motivation for this research is to optimize the pressure vessel by changing support location and nozzle location. Pressure vessel design is carried out as per the standards set by ASME in pressure vessel code. It is designer's decision to select appropriate analytical data for determination of thickness of the walls. In this paper some of recent and past research carried on the pressure vessel design and analysis.

- by Ariadne Cruz and +1
- •
- Materials Engineering, Biomedical Engineering, Carbon, Materials

The micromechanisms of deformation and fracture in tension were analyzed in a commercial polypropylene nonwoven geotextile material in a wide range of strain rates. Two different loading scenarios (smooth and notched specimens) were considered to study how these mechanisms are modified in presence of a stress concentration. The nonwoven fabric presented significant deformability and energy-absorption capability, which decreased with the strain rate, together with a high level of strength, which increased with strain rate. In addition, the material was notch-insensitive as the stress concentration around the crack tip was relieved by marked nonlinear behavior, which induced crack blunting. Different experimental techniques (standard mechanical tests, in situ testing within the scanning electron microscope, digital image correlation, etc.) were used to establish the sequence of deformation and failure processes and to link these micromechanisms with the macroscopic behavior.

- by Alvaro Ridruejo
- •
- Engineering, Image Processing, Microstructure, Scanning Electron Microscopy
- by hieu le thanh
- •
- Genetics, Cultural Studies, Stochastic Process, Set Theory
- by Philippe Huchon and +2
- •
- Geology, Geophysics, Saudi Arabia, Sea Level
- by Minh-Chau Huynh
- •
- Engineering, Mechanical Engineering, Chemical Engineering, Biomedical Engineering
- by Hakan Basarir
- •
- Civil Engineering, Geology, Finite Element, Geological strength index

This paper presents a novel anchor system called U-anchor that can be used to significantly improve the performance of surface mounted reinforcement for concrete/masonry made of fiber reinforced polymer (FRP) composites. In applications... more

- by Ahmed Khalifa
- •
- Concrete, Flexural Strength, Reinforced concrete, Fiber Reinforced Polymer
- by Khalid Amrouch
- •
- Geology, Geophysics, Structural Geology, Tectonics
- by sanjay kumar
- •
- Materials Engineering, Mechanical Engineering, Chemical Engineering, Modeling
- by Nicolaj Larsen
- •
- Geology, Geomorphology, Little Ice Age, Grain size distribution

A study was carried out to investigate the effect of governing metal thickness (GMT) and stack orientation on weld quality and mechanical behaviour of resistance spot welded (RSW) AA5754 aluminium. Individual samples from 27 different joint stacks in three test geometries; lap-shear, coach-peel and cross-tension were evaluated for quasi-static and fatigue performance; micro examination was also conducted on some of the samples to assess weld quality. The results derived from over 1000 samples show that: the GMT has a significant effect on welding quality by controlling progression of weld nugget from under-developed to over penetrated. The GMT also determines the feasible quasi-static joint strength regardless of stacks in the three joint geometries tested, though the effect differs with respect to test geometry. The fatigue behaviour is dominated by the effect of GMT on attainable weld size, overall joint stiffness and stress concentration, providing good quality of weld nuggets is...

- by Dezhi Li
- •
- Materials Design, Resistance Spot Welding, Stress Concentration
- by Hakan Ha
- •
- Chemical Engineering, High Pressure, Minerals Engineering, Classification
- by Elisa Magni
- •
- Dentistry, Elasticity, Humans, Viscosity
- by Philippe A GILLES
- •
- Microstructure, Heterogeneity, Crack propagation, Weld
- by J. Schijve
- •
- Mechanical Engineering, Civil Engineering, Fatigue, Stress Concentration
- by Aki Na
- •
- Multidisciplinary, Stress Concentration
- by Bianca Pinheiro
- •
- Mechanical Engineering, Civil Engineering, Pipeline, Fatigue
- by Chung-huang Yu
- •
- Engineering, Gait, Humans, Standard Deviation