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Author: Reeder, JR. Publisher: ISBN: Category : Accelerated life testing Languages : en Pages : 20
Book Description
Constant ramp strength tests on unidirectional thermoplastic composite specimens oriented in the 90° direction were conducted at constant temperatures ranging from 149°C to 232°C. Ramp rates spanning 5 orders of magnitude were tested so that failures occurred in the range from 0.5 s to 24 h (0.5 to 100 000 MPa/sec). Below 204°C, time-temperature superposition held allowing strength at longer times to be estimated from strength tests at shorter times but higher temperatures. The data indicated that a 50% drop in strength might be expected for this material when the test time is increased by 9 orders of magnitude. The shift factors derived from compliance data applied well to the strength results.
Author: Reeder, JR. Publisher: ISBN: Category : Accelerated life testing Languages : en Pages : 20
Book Description
Constant ramp strength tests on unidirectional thermoplastic composite specimens oriented in the 90° direction were conducted at constant temperatures ranging from 149°C to 232°C. Ramp rates spanning 5 orders of magnitude were tested so that failures occurred in the range from 0.5 s to 24 h (0.5 to 100 000 MPa/sec). Below 204°C, time-temperature superposition held allowing strength at longer times to be estimated from strength tests at shorter times but higher temperatures. The data indicated that a 50% drop in strength might be expected for this material when the test time is increased by 9 orders of magnitude. The shift factors derived from compliance data applied well to the strength results.
Author: Richard Allan Schapery Publisher: ASTM International ISBN: 0803126018 Category : Composite materials Languages : en Pages : 380
Book Description
Annotation Improved reliability in commercial and military applications requires improved understanding of and predictive models for the time- dependent and nonlinear mechanical behavior of polymeric composites. The May 1998 American Society for Testing and Materials symposium sought to fuse the efforts in this direction of specialists in polymers and composites; these 18 papers are therefore grouped under the subheadings of polymers and composites. Primary polymer topics are chemical and physical aging, nonlinear viscoelasticity, and viscoplasticity. Composites' issues include: the effect of physical aging on time-dependent behavior, multiaxial nonlinear effects, compressive behavior, nonlinear viscoelasticity and viscoplasticity, failure mechanisms, hygrothermal effects, durability, and accelerated strength testing. Schapery is affiliated with the U. of Texas at Austin, and Sun is at Purdue U. Annotation copyrighted by Book News, Inc., Portland, OR.
Author: Michel Biron Publisher: William Andrew ISBN: 0081025025 Category : Technology & Engineering Languages : en Pages : 1165
Book Description
Thermoplastics and Thermoplastic Composites, Third Edition bridges the technology and business aspects of thermoplastics, providing a guide designed to help engineers working in real-world industrial settings. The author explores the criteria for material selection, provides a detailed guide to each family of thermoplastics, and explains the various processing options for each material type. More than 30 families of thermoplastics are described with information on their advantages and drawbacks, special grades, prices, transformation processes, applications, thermal behavior, technological properties (tenacity, friction, dimensional stability), durability (ageing, creep, fatigue), chemical and fire behavior, electrical properties, and joining possibilities. In this third edition, standards and costs have been updated for all materials, and more information on topics such as bioplastics, 3D printing and recycling have been added. In addition, an entirely new chapter on the concept of ‘Industry 4.0’ has been added, with guidance and suggestions on the incorporation of virtualization, connectivity, and automation into the plastics engineering process to reduce materials and processing failure. Includes detailed case studies that illustrate best practices across a wide range of applications and industry sectors Presents a new chapter on the ‘Industry 4.0’ concept Suggests software solutions to assist with design, decision-making and management, along with other forms of automation
Author: H.S. Lee Publisher: Trans Tech Publications Ltd ISBN: 3038131806 Category : Technology & Engineering Languages : en Pages : 922
Book Description
Volume is indexed by Thomson Reuters CPCI-S (WoS). This volume is made up of contributions from researchers in 22 countries. It aims to promote exchange of the latest experimental and theoretical results on structural integrity, durability and failure analysis; with the emphasis on fracture and damage mechanics.
Author: Rui Miranda Guedes Publisher: Woodhead Publishing ISBN: 0081026021 Category : Technology & Engineering Languages : en Pages : 586
Book Description
Creep and Fatigue in Polymer Matrix Composites, Second Edition, updates the latest research in modeling and predicting creep and fatigue in polymer matrix composites. The first part of the book reviews the modeling of viscoelastic and viscoplastic behavior as a way of predicting performance and service life. Final sections discuss techniques for modeling creep rupture and failure and how to test and predict long-term creep and fatigue in polymer matrix composites. Reviews the latest research in modeling and predicting creep and fatigue in polymer matrix composites Puts a specific focus on viscoelastic and viscoplastic modeling Features the time-temperature-age superposition principle for predicting long-term response Examines the creep rupture and damage interaction, with a particular focus on time-dependent failure criteria for the lifetime prediction of polymer matrix composite structures that are illustrated using experimental cases
Author: Reeder, JR.
Author: Reeder, JR.
Author: Richard Allan Schapery
Author: 
Author: Michel Biron
Author: H.S. Lee
Author: Rui Miranda Guedes
Author: Thomas S. Gates
Author: Society of Manufacturing Engineers
Author: Richard W. Miller
Author: American Concrete Institute Staff