Basic Study of PK Fiber Tire Cord3

2007 ◽  
Vol 35 (4) ◽  
pp. 317-325 ◽  
Author(s):  
Yugo Zuigyo ◽  
Masahiko Yamamoto
Keyword(s):  
High Performance ◽  
High Strength ◽  
Laboratory Evaluation ◽  
High Modulus ◽  
Tire Cord ◽  
Basic Study ◽  
Performance Requirements ◽  
Simple Processing ◽  
Long Time ◽  
Excellent Adhesion

Abstract Rayon, nylon, and polyester have been used for a long time as general tire reinforcements. Recently application of p-aramid fiber, which has high tenacity and high modulus properties, is gradually increasing in order to satisfy high-performance requirements, large tires, and tire weight reduction. However, in working with high-strength and high-modulus fibers such as p-aramid it is normally difficult to obtain excellent adhesion with simple processing methods and their fatigue resistances are not good. This time we have focused on a new high-tenacity and high-modulus “polyketone” fiber obtained by gel-spun technology and performed a basic study in tire cord application. Through laboratory evaluation, we have confirmed that polyketone cord fiber has excellent adhesion, comparable with rayon and nylon, and good fatigue resistance in comparison with rayon. In addition, through its tire evaluation as a body-ply cord and cap-ply cord for PCR tires, we have confirmed its performance advantage in comparison to current tire cords.

Compressive Testing of H-Shaped Steel Stub Columns Fabricated with Grade 800MPa High Performance Steel

2013 ◽  
Vol 671-674 ◽  
pp. 646-649
Author(s):  
Kang Min Lee ◽  
Myung Jae Lee ◽  
Young Suk Oh ◽  
T.S. Kim ◽  
Do Hwan Kim
Keyword(s):  
High Performance ◽  
High Strength ◽  
Structural Members ◽  
Basic Study ◽  
High Rise ◽  
Long Span ◽  
Compressive Testing ◽  
High Performance Steel ◽  
Stub Column ◽  
Structural Behaviors

With the increased demand for high-rise and long-span structures, high strength with high performance steels have been utilized for these kind of structures. For the grade 800MPa high performance steel, although it was included in Korean Standard as high strength steel(HSA 800), however the HSA 800 steel was excluded in Korean Building Code-Structures due to the rack of research results for the structural behaviors of members fabricated with HSA 800 steel. Therefore, this paper describes basic study for the design specification of structural members using HSA 800 high performance steel. For this purpose, welded H-shaped stub column specimens with various width-to-thickness ratios were designed and tested in order to investigate the buckling behaviors and ultimate compressive strength.

Nanoadditives - Future of High Performance Concrete

2017 ◽  
Vol 908 ◽  
pp. 83-87
Author(s):  
Martin Labaj ◽  
Jaroslav Válek ◽  
Tomáš Jarolím ◽  
Lucia Osuská
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
High Strength ◽  
Concrete Surface ◽  
Cement Stone ◽  
Hardened Cement ◽  
Concrete Technology ◽  
High Quality ◽  
Long Time ◽  
The Impact

These days it is almost impossible to imagine the technology of high performance concrete without the use of any kind of additive. Whether it is a material capable of achieving high strength, excellent mobility of the fresh mix without losing cohesion or producing high quality architectural concrete surface, microadditives have their certain place for a long time now. Although the research in this field still has something to offer, it does not hurt to try to consider the future and imagine the path that will be taken in the production of high performance concrete of next generation. The article deals with the possibility of using nanoparticles in concrete technology. These materials can actively participate in the creation of very high-quality cement stone. In addition, due to the extreme reactivity of nanoparticles, these reactions can take place almost immediately after the onset of hydration and during its first hours. The experimental part of the paper assesses the impact of nanoparticles on selected properties of fresh cement paste and hardened cement mortar. In all cases, there was a positive effect and it has been demonstrated that nanoparticles may eventually create a new category of high performance concrete additives.

scholarly journals Mechanical and Static Stab Resistant Properties of Hybrid-Fabric Fibrous Planks: Manufacturing Process of Nonwoven Fabrics Made of Recycled Fibers

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1140 ◽  
Author(s):  
Yu-Chun Chuang ◽  
Limin Bao ◽  
Mei-Chen Lin ◽  
Ching-Wen Lou ◽  
TingAn Lin
Keyword(s):  
High Performance ◽  
High Strength ◽  
Woven Fabrics ◽  
Test Results ◽  
High Modulus ◽  
New Materials ◽  
Nonwoven Fabrics ◽  
Pet Fibers ◽  
Recycled Fibers ◽  
Hybrid Fabric

With the development of technology, fibers and textiles are no longer exclusive for the use of clothing and decoration. Protective products made of high-strength and high-modulus fibers have been commonly used in different fields. When exceeding the service life, the protective products also need to be replaced. This study proposes a highly efficient recycling and manufacturing design to create more added values for the waste materials. With a premise of minimized damage to fibers, the recycled selvage made of high strength PET fibers are reclaimed to yield high performance staple fibers at a low production cost. A large amount of recycled fibers are made into matrices with an attempt to decrease the consumption of new materials, while the combination of diverse plain woven fabrics reinforces hybrid-fabric fibrous planks. First, with the aid of machines, recycled high strength PET fibers are processed into staple fibers. Using a nonwoven process, low melting point polyester (LMPET) fibers and PET staple fibers are made into PET matrices. Next, the matrices and different woven fabrics are combined in order to form hybrid-fabric fibrous planks. The test results indicate that both of the PET matrices and fibrous planks have good mechanical properties. In particular, the fibrous planks yield diverse stab resistances from nonwoven and woven fabrics, and thus have greater stab performance.

Surface Densification Coupled with Higher Density Processes Targeting High-Performance Gearing

2007 ◽  
Vol 534-536 ◽  
pp. 317-320 ◽  
Author(s):  
Francis Hanejko ◽  
Arthur Rawlings ◽  
Patrick King ◽  
George Poszmik
Keyword(s):  
High Performance ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
High Strength ◽  
Rolling Contact ◽  
Powder Metal ◽  
Surface Densification ◽  
Performance Requirements ◽  
Fatigue Durability ◽  
Steel Grades

This paper will describe a powder and processing method that facilitates single presssingle sintered densities approaching 7.5 g/cm³. At this sintered density, mechanical properties of the powder metal (P/M) component are significantly improved over current P/M technologies and begin to approach the performance of wrought steels. High performance gears have the added requirement of rolling contact fatigue durability that is dependent upon localized density and thermal processing. Combining high density processing of engineered P/M materials with selective surface densification enables powder metal components to achieve rolling contact fatigue durability and mechanical property performance that satisfy the performance requirements of many high strength automotive transmission gears. Data will be presented that document P/M part performance in comparison to conventional wrought steel grades.

scholarly journals Prevention of Autogenous Shrinkage in High-Strength Mortars with Saturated Tea Waste Particles

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2654 ◽  
Author(s):  
Sadam Hussain Jakhrani ◽  
Jae Suk Ryou ◽  
Atta-ur-Rehman ◽  
In Kyu Jeon ◽  
Byeong Hun Woo ◽  
...  
Keyword(s):  
Silica Fume ◽  
High Performance ◽  
Autogenous Shrinkage ◽  
Lightweight Aggregate ◽  
High Strength ◽  
Cement Composites ◽  
Tea Waste ◽  
Long Time ◽  
Waste Particles ◽  
Mechanical Strengths

The purpose of this study was to prevent early age autogenous shrinkage in high-strength mortars with saturated tea waste particles. In general, high strength and high performance concretes are made with low water/binder ratios; hence, they are susceptible to shrink at early ages. This shrinkage occurs due to self-desiccation that leads to autogenous shrinkage. To overcome self-desiccation problems in high-strength cement composites, it is necessary to keep the composites moist for a long time. Pre-saturated porous lightweight aggregates and super absorbent polymers are the most commonly used materials in high-strength cement composites to keep them moist for a long time; however, in this study, porous tea waste particles were used to keep the cement mortars moist. Pre-saturated tea waste particles were used in two different size proportions, making up as much as 3% of the volume of the binder. Moreover, commonly used lightweight aggregate (perlite) was also used to compare the outcomes of specimens made with tea waste particles. Different parameters were observed, such as, flow of fresh mortars, autogenous shrinkage, mechanical strengths and microstructure of specimens. The addition of tea waste and perlite particles in mortars made with Ordinary Portland cement (OPC) as the only binder, showed a reduction in flow, autogenous shrinkage and mechanical strengths, as compared to mixes made with partial addition of silica fume. Although, the use of silica fume improved the mechanical strength of specimens. Moreover, the use of saturated tea waste and perlite particles also improved the microstructure of specimens at an age of 28 days. The results revealed that the saturated tea waste particles have the ability to prevent autogenous shrinkage but they reduce strength of high-strength mortars at early ages.

High performance pulsed magnets with high strength conductors and high modulus internal reinforcement

2000 ◽  
Vol 10 (1) ◽  
pp. 542-545 ◽  
Author(s):  
L. Li ◽  
B. Lesch ◽  
V. Cochran ◽  
R. Staton ◽  
S. Tozer ◽  
...  
Keyword(s):  
High Performance ◽  
High Strength ◽  
High Modulus ◽  
Pulsed Magnets ◽  
High Strength Conductors

BERYLCO 25

Alloy Digest ◽  
1973 ◽  
Vol 22 (9) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Performance ◽  
High Strength ◽  
Heat Treating ◽  
Beryllium Copper

Abstract BERYLCO 25 is the standard high-performance beryllium copper alloy most widely used because of its high strength, hardness and excellent spring characteristics. BERYLCO 25 is the updated version of BERYLCO 25S (Alloy Digest Cu-3, November 1952). This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-271. Producer or source: Kawecki Berylco Industries Inc..

ARMCO PH 13-8Mo

Alloy Digest ◽  
1990 ◽  
Vol 39 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Stress Corrosion ◽  
Tensile Properties ◽  
High Performance ◽  
High Strength ◽  
Heat Treating ◽  
Temperature Performance

Abstract ARMCO PH 13-8Mo is designed for high-performance applications requiring high strength coupled with excellent resistance to corrosion and stress corrosion. It has excellent toughness, good transverse properties and excellent forgeability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-224. Producer or source: Baltimore Specialty Steels Corporation. Originally published May 1969, revised February 1990.

RMI 6Al-2Sn-2Zr-2Mo-0.15Si

Alloy Digest ◽  
2001 ◽  
Vol 50 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Strength ◽  
Bend Strength ◽  
High Modulus ◽  
Temperature Performance ◽  
Heavy Section

Abstract Ti-6Al-2Sn-2Zr-2Mo-0.05Si alloy is used as heavy section forgings that require high strength, fracture toughness, and high modulus. It is used as forgings and sheet for air frames. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and bend strength as well as fracture toughness and creep. It also includes information on high temperature performance as well as joining. Filing Code: TI-119. Producer or source: RMI Company.

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