scholarly journals Effects of notch sharpness and plate thickness on the fracture toughness KIc of acrylic resin.

1986 ◽  
Vol 35 (397) ◽  
pp. 1157-1162
Author(s):  
Shoji HARADA ◽  
Nao-Aki NODA ◽  
Izumi FUKASAKO ◽  
Tatsuo ENDO
Keyword(s):  
Fracture Toughness ◽  
Plate Thickness ◽  
Acrylic Resin ◽  
Notch Sharpness

Investigation of loading rate and plate thickness effects in dynamic fracture toughness of PMMA

1997 ◽  
Vol 57 (4) ◽  
pp. 459-460
Author(s):  
H. Wada ◽  
M. Seika ◽  
T.C. Kennedy ◽  
C.A. Calder ◽  
K. Murase
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
Loading Rate ◽  
Plate Thickness ◽  
Dynamic Fracture Toughness

Fracture Toughness of Thick Steel Plates for Shipbuilding

2008 ◽  
Vol 580-582 ◽  
pp. 89-92
Author(s):  
Joon Sik Park ◽  
B.Y. Jung ◽  
Hiroshi Yajima ◽  
Jong Bong Lee
Keyword(s):  
Fracture Toughness ◽  
Crack Initiation ◽  
Large Scale ◽  
Steel Plate ◽  
Plate Thickness ◽  
Steel Plates ◽  
Initiation And Propagation ◽  
Thick Steel ◽  
Test Result ◽  
Grade Steel

In this study, the effect of thickness on the fracture toughness of the steel plate with the thickness of 80mm has been investigated by the wide plate tensile test and ESSO test. The fracture toughness for crack initiation and propagation was evaluated quantitatively for the full thickness specimen. It was found that EH-36 grade steel with the thickness of 80mmt showed the KIC value of 164kgf/mm1.5 at -145°C. Also, large-scale ESSO test result showed that the steel with the thickness of 80mm had 520kgf/mm1.5 at -10°C. Although it was known that the fracture toughness decreases with the increase of the plate thickness, EH-36 grade steel with the thickness of 80mm had enough values of fracture toughness to prevent the crack initiation and arrest the brittle crack propagation.

Dynamic Fracture Behavior of Magnesium Alloy under Biaxial Stress

2005 ◽  
Vol 488-489 ◽  
pp. 853-858 ◽  
Author(s):  
Do Yeon Hwang ◽  
Akira Shimamoto
Keyword(s):  
Fracture Toughness ◽  
Magnesium Alloy ◽  
High Speed ◽  
Plate Thickness ◽  
Alloy Sheet ◽  
Biaxial Stress ◽  
Caustic Method ◽  
Magnesium Alloy Az31b ◽  
Static And Dynamic Loading ◽  
Cross Type

In this study, dynamic behaviors of cracks under dynamic biaxial stress were investigated. We conducted static and dynamic loading fracture experiments on a magnesium alloy (AZ31B-O) under equitable and inequitable biaxial stress by using a hydraulic high-speed biaxial experimental machine. We processed specimens as the cross type with a crack. Different kinds of cracks were defined by their crack angles. We analyzed the results using the caustic method. The experiments revealed some important findings; there is a negative relation between the fracture toughness value and the plate thickness of the magnesium alloy sheet specimen; the fracture toughness value decreases when the crack has an angle different from the loading direction; the fracture toughness value decreases significantly under inequitable biaxial stress.

scholarly journals The Effects of Specimen Configuration and Plate Thickness on Large Scale Yielding Brittle Fracture Toughness

1980 ◽  
Vol 1980 (148) ◽  
pp. 177-182
Author(s):  
Kin-ichi Nagai ◽  
Shigetoshi Shimizu ◽  
Shun-ichi Kawano ◽  
Shuhei Kuribayashi
Keyword(s):  
Fracture Toughness ◽  
Brittle Fracture ◽  
Large Scale ◽  
Plate Thickness ◽  
Scale Yielding

Influence of Microstructural Variation in Thick Section Steels on the Characterisation of Fracture Toughness Using Sub-Size Specimens

2019 ◽  
Author(s):  
Philippa Moore ◽  
Borislava Yordanova ◽  
Yong Lu ◽  
Yin Jin Janin
Keyword(s):  
Fracture Toughness ◽  
Master Curve ◽  
Plate Thickness ◽  
High Strength ◽  
Steel Plates ◽  
Full Thickness ◽  
Master Curve Method ◽  
Sampling Locations ◽  
Curve Method ◽  
Thick Material

Abstract The challenges of performing full-thickness fracture toughness tests on steel plates of 100mm thickness and greater means that the use of sub-size specimens is desirable. In this work, 100mm thick parent plate of S690 high strength steel was characterised using SENB fracture toughness specimens with thickness of 12mm, 25mm, 50mm and 100mm. Sub-size specimens were extracted at two different locations through the plate thickness; mid-wall and quarter wall. Sufficient specimens were tested to apply the Master Curve method in ASTM E1921 to predict the behaviour of 100mm thick material from each set of sub-size specimens. The through-thickness microstructural variation in these heavy-wall steel plates meant that significantly different predictions of full-thickness fracture toughness were obtained from the two sampling locations. However, when sampled from the mid-wall location, sub-size specimens down to 25mm thick were able to conservatively predict full-thickness fracture toughness using Master Curve methods.

DILLIDUR 325L

Alloy Digest ◽  
2011 ◽  
Vol 60 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Physical Properties ◽  
Room Temperature ◽  
Plate Thickness ◽  
Surface Hardness ◽  
Heat Treating ◽  
Dump Truck ◽  
Resistant Steel ◽  
Materials Handling

Abstract Dillidur 325L is a wear resistant steel with a surface hardness at room temperature of 325 HB for 10 mm plate thickness. The material is easy to bend, hot work and machine. Due to its increased wear resistance, it is used to produce excavators, conveyors, and materials handling systems as well as dump truck bodies. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on wear resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-634. Producer or source: Dillinger Hütte GTS.

Fracture Toughness and Fatigue Behavior of T7451 Al-Zn-Mg-Cu Alloy Thick Plate

2014 ◽  
Vol 788 ◽  
pp. 223-230 ◽  
Author(s):  
Li Li Wei ◽  
Qing Lin Pan ◽  
Yi Lin Wang ◽  
Lei Feng
Keyword(s):  
Mechanical Property ◽  
Fracture Toughness ◽  
Fatigue Resistance ◽  
Fatigue Behavior ◽  
Plate Thickness ◽  
Transgranular Fracture ◽  
Cu Alloy ◽  
Tensile Fatigue ◽  
Strain Fracture ◽  
Plain Strain

The mechanical property, fracture toughness and fatigue behavior of T7451 Al-Zn-Mg-Cu alloy thick plates in different orientations and with various thicknesses were investigated by means of tensile, fatigue and plain strain fracture toughness testing. And the microstructures and fracture morphologies were analyzed with optical microscopy and scanning electron microscopy. The results showed that the samples in longitudinal (L)-transversal (T) orientation possessed better mechanical property, fracture toughness and fatigue resistance than that in T-L orientation. Fractography and optical microanalysis clearly demonstrated that the feature of recrystallized grains is the decisive factor for this anisotropy. On the other hand, values of strength and fracture toughness decreased with the increase of plate thickness, but their fatigue crack growth rate became slower. Combined with the fractography analysis, the increase of recrystallization degree and the coarser grains in the thicker plate should be the main reason for the detrimental to the strength and toughness properties since the main fracture mechanism changes from ductile transgranular fracture to intergranular failure. However, these coarse recrystallized grains play an advantageous role for fatigue resistance from crack deflection and closure perspectives.

scholarly journals An ORMOSIL-Containing Orthodontic Acrylic Resin with Concomitant Improvements in Antimicrobial and Fracture Toughness Properties

PLoS ONE ◽  
2012 ◽  
Vol 7 (8) ◽  
pp. e42355 ◽  
Author(s):  
Shi-qiang Gong ◽  
Jeevani Epasinghe ◽  
Frederick A. Rueggeberg ◽  
Li-na Niu ◽  
Donald Mettenberg ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Acrylic Resin
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