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polymer testing

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Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... Abstract This article introduces the principal methodologies and some advanced technologies that are being applied for nondestructive evaluation (NDE) of fiber-reinforced polymer-matrix composites. These include acoustic emission, ultrasonic, eddy-current, computed tomography, electromagnetic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003046
EISBN: 978-1-62708-200-6
... repair have been validated in this article through the required environmental and load condition tests. These include bonded-scarf joint flush repair, double-scarf joint flush repair, blind-side banded-scarf repair, blind-side sandwich repair, and bonded external patch repair. A brief note on...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003045
EISBN: 978-1-62708-200-6
... culminated in standard industry reference publications of testing procedures, such as those of the American Society for Testing and Materials and the American Society of Mechanical Engineers. These organizations are engaged in the documentation of methods of testing or referencing the specific properties of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003043
EISBN: 978-1-62708-200-6
... Abstract The structural efficiency of a composite structure is established by its joints and assembly. Adhesive bonding, mechanical fastening, and fusion bonding are three types of joining methods for polymer-matrix composites. This article provides information on surface treatment and the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003042
EISBN: 978-1-62708-200-6
... Abstract This article describes the use of conventional machining techniques, laser cutting and water-jet cutting for producing finished composite parts. It explains two representative polymer-matrix composites--graphite and aramid composites--and discusses the machining and drilling problems...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003006
EISBN: 978-1-62708-200-6
... this basic structure permits the engineers to understand which polymers may be acceptable for a certain application, and which may not. There are various possible classification schemes for polymers. Typical classification categories include polymerization process, chemical elements that make up the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003025
EISBN: 978-1-62708-200-6
... useful life of the specimen or the service item. These prefailure manifestations include crazes, cracks, and stress whitening. Crazes appear to be similar to cracks when viewed by the naked eye, but they differ in that the gap between the faces is bridged by fibers of drawn polymeric material. They are...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003026
EISBN: 978-1-62708-200-6
... ( Ref 6 , 7 ). A number of accelerated tests are used routinely to screen organic materials under consideration for use in electronic applications. Most common is the temperature-humidity-bias (THB) test. A large dc bias is placed between electrode lines that are in contact with a polymer sample in a...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003027
EISBN: 978-1-62708-200-6
... affected by the base material and are measured as optical properties. Polymers differ from many other optical materials in the degree to which their properties change with wavelength, temperature, and moisture, and no optical testing of polymers or plastic optical components can be considered complete...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003029
EISBN: 978-1-62708-200-6
... 2 ). A large amount of work has been done to improve the fire resistance of polymers. Along with this effort has come the development of flammability tests, and codes and regulations that cite these tests. There are two basic approaches to improving the fire resistance of a polymeric...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003028
EISBN: 978-1-62708-200-6
.... Their replacement (fluoropolymers or aromatic polymers) results in substantially improved stability. The bond strength in polymers produced by step reactions, or condensation polymerization techniques, are usually stronger than those produced by chain or addition polymerization techniques. Thermal...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003030
EISBN: 978-1-62708-200-6
... application or to investigate a particular wear process. It describes the wear tests conducted with/without abrasives and explains the concept of PV limit (where P is contact pressure and V is velocity). The article concludes with references and tables of friction and wear test data for polymeric materials...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003044
EISBN: 978-1-62708-200-6
... data has proved more difficult, and therefore it is often necessary to resort to characterization of laminate strength properties. Thus, basic tensile testing is divided into lamina and laminate testing. There also are specimen differences between polymeric-matrix and metal-matrix composites that...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005667
EISBN: 978-1-62708-198-6
... positive reasons for considering a polymer as a material of construction in a medical device. However, their unique complexity also brings with it unique considerations for assessing their biocompatibility. Polymers differ from metals or ceramics in that their synthesis relies on a polymerization reaction...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006063
EISBN: 978-1-62708-172-6
... phase to rigid solid as the coating cures. Thermoplastic coatings melt above a specified temperature and resume their solid form on cooling. Material properties change most rapidly through the glass transition ( T g ) region, the temperature at which the polymeric material goes from a hard, glasslike...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
... Abstract This article describes testing and characterization methods of ceramics for chemical analysis, phase analysis, microstructural analysis, macroscopic property characterization, strength and proof testing, thermophysical property testing, and nondestructive evaluation techniques...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006026
EISBN: 978-1-62708-172-6
... resistance of a polymer-based protective lining in immersion or partial-immersion service. ASTM C868, “Standard Test Method for Chemical Resistance of Protective Linings,” is designed to closely approximate lining service conditions, including the temperature difference between the external and internal...
Book Chapter

By Peter J. Blau
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003242
EISBN: 978-1-62708-199-3
... mounting them in the testing machine to ensure that handling smudges are removed. Store specimens to protect test surfaces. Because polymeric materials can react with some solvents, some plastics are tested “as-received.” In this case, it is doubly important to avoid touching the contact surfaces with...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.9781627081764
EISBN: 978-1-62708-176-4
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005676
EISBN: 978-1-62708-198-6
... Abstract Polymers offer a wide range of choices for medical applications because of their versatility in properties and processing. This article provides an overview of polymeric materials and the characteristics that make them a unique class of materials. It describes the ways to classify...