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Safety Factor of a U-Notched Plate
2003Figure 1 shows a rectangular aluminium plate containing a single U-notch. The plate is subjected to cyclic loading at a stress ratio of R=0. The fatigue limit (at R=0) is 220 MPa. Determine the maximum peak stress for the plate to maintain a safety factor of 1.5 under fail safe conditions. The dimensions of the plate are shown in Figure 1.
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Fracture Assessment of U-Notched Graphite Plates Under Tension
International Journal of Fracture, 2013The experimentally obtained tensile load-bearing capacity of fifteen U-notched polycrystalline graphite plates reported in literature was theoretically estimated by means of two well-known brittle fracture models, namely the mean stress (MS) and the point stress (PS) criteria.
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Assessment of UMTS and Averaged SED Fracture Criteria for U-Notched Specimens
Key Engineering Materials, 2013A set of mixed-mode I/II fracture tests was carried out on a polyurethane material. Using a single edge notched bend (SENB) type specimen, containing straight and respectively inclined U notches, the full range from pure mode I to dominant mode II was achieved. Two different fracture criteria were employed for the prediction of the fracture conditions:
Hannelore Filipescu +2 more
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Effects of U-notches on the dynamic fracture and fragmentation of explosively driven cylinders
Theoretical and Applied Fracture Mechanics, 2015Abstract Metal cylinder specimens are explosively expanded to fragmentation and the effect of U-notches in walls are investigated on fragmentation behaviors and failure mechanisms of the cylinders experimentally and numerically. Fragments were recovered by sawdust and sorted into four categories according to fragment morphology and fracture mode. The
Minzu Liang, Xiangyu Li, Fangyun Lu
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Stress Concentration Factor and Stress Intensity Factor with U-notch and Crack in the Beam
Transactions of the Korean Society of Mechanical Engineers A, 2016Abstract : The stress concentration factors and stress intensity factors for a simple beam and a cantilever are analyzed by using finite element method and phtoelasticity. Using the analyzed results, the estimated graphs on stress concentration factors and stress intensity factors are obtained.
Bo Seong Seo, Kwang Ho Lee
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The effective T-stress estimation and crack paths emanating from U-notches
Engineering Fracture Mechanics, 2010The concept of the T-stress as a local constraint factor has been extended to U-notch tip stress distribution as the effective T-stress. The effective T-stress has been estimated as the average value of the T-stress in the region corresponding to the effective (characteristic) distance ahead of the notch tip. The T-stress is evaluated by finite element
M. Hadj Meliani +3 more
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Ductile fracture of U-notched bend specimens of spheroidized AISI 1095 steel
Metallurgical Transactions A, 1978Ductile fracture was studied in U-notched, bend specimens of spheroidized AISI 1095 steel. The role of microstructure in void initiation and growth was investigated. The stress and strain states were controlled by varying the acuity of the notch and the bending load.
T. Goldenberg, T. D. Lee, J. P. Hirth
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Pure shear fracture study in a brittle graphite material containing a U-notch
International Journal of Damage Mechanics, 2013A disc-type specimen containing a central bean-shaped slit, called the U-notched Brazilian disc specimen, was utilized to measure experimentally the mode II notch fracture toughness of a type of commercial polycrystalline graphite. First, 24 U-notched Brazilian disc graphite specimens were fabricated for four different notch tip radii, and the ...
AR Torabi, M Fakoor, MA Darbani
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Application of the equivalent material concept to the study of the ductile failure due to U-notches
International Journal of Pressure Vessels and Piping, 2019Abstract This paper studies the applicability of the Equivalent Material Concept to the fracture of elastoplastic materials due to the presence of U-notches. This approach consists of simplifying the study of an elastoplastic material by assuming linear elastic behaviour.
F.J. Gomez, A.R. Torabi
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A criterion for brittle fracture in U-notched components under mixed mode loading
Engineering Fracture Mechanics, 2009Abstract A failure criterion is proposed for brittle fracture in U-notched components under mixed-mode static loading. The criterion, called UMTS, is developed based on the maximum tangential stress criterion and also a criterion proposed in the past for mode I failure of rounded V-shaped notches [Gomez FJ, Elices M.
M.R. Ayatollahi, A.R. Torabi
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