Tensile Properties and Fracture Toughness of Three Rubber-Modified Epoxies

2013 ◽  
Vol 392 ◽  
pp. 46-50 ◽  
Author(s):  
Helen Wu
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Tensile Properties ◽  
Core Shell ◽  
Moderate Increase ◽  
Liquid Rubber ◽  
Matrix Properties ◽  
Epoxy Systems

This paper investigates the tensile properties and fracture toughness of a liquid rubber-modified highly crosslinked epoxy cured using 4,4 diaminodiphenyl sulphone (DDS/LR). The results for DDS/LR epoxy in relation to rubber and matrix properties are also compared with those of rubber-modified lowly crosslinked epoxy systems, namely, liquid rubber-modified piperidine cured epoxy (Piperidine/LR) and core-shell-rubber modified piperidine cured epoxy (Piperidine/CSR). It was found that highly crosslinked DDS/LR epoxy has a higher tensile strength than that of either Piperidine/LR or Piperidine/CSR epoxy, while it shows only a moderate increase in the fracture toughness.

INLAND DURASPRING

Alloy Digest ◽  
1998 ◽  
Vol 47 (5) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Tensile Properties ◽  
High Stress ◽  
High Strength ◽  
Spring Steel ◽  
Fatigue Properties ◽  
Light Truck ◽  
Suspension Systems ◽  
Spring Steels

Abstract Inland DuraSpring is a high-strength microalloyed spring steel for use in high stress coil springs for automobile and light truck suspension systems. This bar product offers significant improvements in tensile strength, fatigue properties, and fracture toughness compared to conventional spring steels. This datasheet provides information on composition, hardness, and tensile properties as well asfracture toughness and fatigue. Filing Code: SA-496. Producer or source: Ispat Inland Inc.

VASCO 9-4-20

Alloy Digest ◽  
1997 ◽  
Vol 46 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
High Temperature ◽  
Ultimate Tensile Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Tensile Strength ◽  
Temperature Performance

Abstract Vasco 9-4-20 (0.20 wt% C) is a premium quality aircraft steel that combines high tensile strength with good fracture toughness. It is a heat-treatable alloy capable of developing an ultimate tensile strength greater than 190 ksi. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as heat treating, machining, and joining. Filing Code: SA-489. Producer or source: Vasco, An Allegheny Teledyne Company.

Concrete and Fiber Reinforced Concrete Subjected to Impact Loading

1985 ◽  
Vol 64 ◽  
Author(s):  
Surendra P. Shah
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Reinforced Concrete ◽  
Impact Resistance ◽  
Fiber Reinforced Concrete ◽  
Basic Material ◽  
Strain History ◽  
Moderate Increase ◽  
Fiber Reinforced ◽  
The Impact

ABSTRACTDespite its extensive use, low tensile strength has been recognized as one of the major drawbacks of concrete. Although one has learned to avoid exposing concrete structures to adverse static tensile load, these cannot be shielded from short duration dynamic tensile stresses. Such loads originate from sources such as impact from missiles and projectiles, wind gusts, earthquakes and machine vibrations. The need to accurately predict the structural response and reserve capacity under such loading has led to an interest in the mechanical properties of the component materials at high rates of straining.One method to improve the resistance of concrete when subjected to impact and/or impulsive loading is by the incorporation of randomly distributed short fibers. Concrete (or Mortar) so reinforced is termed fiber reinforced concrete (FRC). Moderate increase in tensile strength and significant increases in energy absorption (toughness or impact-resistance) have been reported by several investigators in static tests on concrete reinforced with randomly distributed short steel fibers. A theoretical model to predict fracture toughness of FRC is proposed. This model is based on the concept of nonlinear elastic fracture mechanics.As yet no standard test methods are available to quantify the impact resistance of such composites, although several investigators have employed a variety of tests including drop weight, swinging pendulums and the detonation of explosives. These tests though useful in ascertaining the relative merits of different composites do not yield basic material characteristics which can be used for design.The author has recently developed an instrumented Charpy type of impact test to obtain basic information such as load-deflection relationship, fracture toughness, crack velocity and load-strain history during an impact event. From this information, a damage based constitutive model was proposed. Relative improvements in performance due to the addition of fibers as observed in the instrumented tests are also compared with other conventional methods.

scholarly journals A systematic study on the synergistic effects of MWCNTs and core–shell particles on the physicomechanical properties of epoxy resin

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ali Gharieh ◽  
Mir Saeed Seyed Dorraji
Keyword(s):  
Tensile Strength ◽  
Elastic Modulus ◽  
Epoxy Resin ◽  
Tensile Properties ◽  
Synergistic Effects ◽  
Average Particle Size ◽  
Physicomechanical Properties ◽  
Core Shell ◽  
Average Particle ◽  
Impact Modifier

AbstractHere, core–shell impact modifier particles (CSIMPs) and multiwalled carbon nanotubes (MWCNs) were used as reinforcing agents for improving the toughness and tensile properties of epoxy resin. For this purpose, emulsion polymerization technique was exploited to fabricate poly(butyl acrylate-allyl methacrylate) core-poly(methyl methacrylate-glycidyl methacrylate) shell impact modifier particles with an average particle size of 407 nm. It was revealed that using a combination of the prepared CSIMPs and MWCNTs could significantly enhance the toughness and tensile properties of the epoxy resin. Also, it was observed that the dominant factors for improving the fracture toughness of the ternary composites are crack deflection/arresting as well as enlarged plastic deformation around the growing crack tip induced by the combination of rigid and soft particles. The Response Surface Methodology (RSM) with central composite design (CCD) was utilized to study the effects of the amounts of CSIMPs and MWCNTs on the physicomechanical properties of the epoxy resin. The proposed quadratic models were in accordance with the experimental results with correlation coefficient more than 98%. The optimum condition for maximum toughness, elastic modulus, and tensile strength was 3 wt% MWCNT and 1.03 wt% CSIMPs. The sample fabricated in the optimal condition indicated toughness, elastic modulus, and tensile strength equal to 2.2 MPa m1/2, 3014.5 MPa, and 40.6 MPa, respectively.

DIRECT FORGE 6069

Alloy Digest ◽  
2001 ◽  
Vol 50 (7) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Aluminum Company ◽  
Gas Cylinders

Abstract Direct Forge 6069 is a Mg-Si-Cu age-hardenable aluminum alloy. Tensile strength in the T-6 condition is approximately 40% higher than that of 6061 alloy with similar corrosion resistance. Applications include light wall bicycle frames and seamless gas cylinders. This datasheet provides information on composition, physical properties, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as heat treating and joining. Filing Code: AL-374. Producer or source: Northwest Aluminum Company.

Ti-155A

Alloy Digest ◽  
1959 ◽  
Vol 8 (5) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Titanium Alloy ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Heat Treat

Abstract T1-155A is a titanium alloy having guaranteed heat treat capability up to 175,000 psi tensile strength for bark stock and 180,000 psi for forging stock. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: Ti-19. Producer or source: Titanium Metals Corporation of America.

VASCO 9-4-30

Alloy Digest ◽  
1997 ◽  
Vol 46 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Shear Strength ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Tensile Strength ◽  
Temperature Performance

Abstract Vasco 9-4-30 (0.30 wt% C) is a premium quality aircraft steel which combines high tensile strength with good fracture toughness. It is a heat treatable alloy capable of developing ultimate tensile strengths greater than 250 ksi. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fracture toughness. It also includes information on high temperature performance as well as heat treating, machining, and joining. Filing Code: SA-491. Producer or source: Vasco, An Allegheny Teledyne Company.

UHB S7

Alloy Digest ◽  
1979 ◽  
Vol 28 (6) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Cold Shock ◽  
Heat Treating ◽  
High Hardenability ◽  
Wide Range

Abstract UHB-S7 is a tool steel characterized by its high hardenability and excellent impact properties. At Rockwell C 59 it has a compressive strength of over 600,000 psi, a tensile strength of 340,000 psi, and a Charpy (no notch, smooth) impact value of more that 140 foot-pounds. It is suitable for a wide range of tool and die work for both hot-shock and cold-shock applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-350. Producer or source: Uddeholm Aktiebolag.

FERROVAC 4340

Alloy Digest ◽  
1958 ◽  
Vol 7 (5) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Endurance Limit ◽  
Heat Treating ◽  
Molybdenum Alloy ◽  
Notched Tensile Strength

Abstract Ferrovac-4340 is a vacuum melted chromium, nickel, molybdenum alloy steel having high endurance limit, high notched tensile strength, and high transverse ductility. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-68. Producer or source: Vacuum Metals Corporation.

ALMANITE WSH

Alloy Digest ◽  
1973 ◽  
Vol 22 (5) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Heat Treating ◽  
Ability To Work ◽  
Grinding Balls ◽  
Nodular Iron

Abstract ALMANITE WSH is an austenitic nodular iron possessing superior tensile strength, toughness and ability to work harden under conditions of severe pounding impact. It is recommended for crusher liners, hammers, grinding balls, etc. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on casting, heat treating, machining, and surface treatment. Filing Code: CI-40. Producer or source: Meehanite Metal Corporation.

Sign in / Sign up

Export Citation Format

Share Document