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Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003435
EISBN: 978-1-62708-195-5
... Abstract This article discusses the attempts made by the industry to create sensing approaches for modeling a process, part, and chemistry and kinetics. It reviews microwave curing of thick-section composites and the resin cure sensors that are used for resin cure monitoring. These include...
Image
Published: 01 August 2018
Fig. 5 Monitoring degree of cure with microwaves More
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003412
EISBN: 978-1-62708-195-5
.... The external surface of the autoclave should not exceed 60 °C (140 °F), except at penetrations. Control Systems Recent developments in sensors and computer technology have greatly increased the ability to monitor and control cure cycles (see the article “Cure Monitoring and Control” in this Volume...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003431
EISBN: 978-1-62708-195-5
... life cycle, starting with characterization of the fiber and resins through understanding what was manufactured via nondestructive evaluation. In-Process Monitoring The quality of composite laminates has traditionally been determined in the cured state, which does not allow for process correction...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006924
EISBN: 978-1-62708-395-9
..., such as the permittivity (dielectric constant), the loss factor (ionic conductivity), and the polarization as a function of temperature or frequency ( Ref 7 ). In the case of thermosets, the most common use of dielectric measurements is to monitor cure during processing. The sample is subjected to an oscillating electric...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003434
EISBN: 978-1-62708-195-5
... covered by this section. Cure process quality control following lay-up is covered in the article “Cure Monitoring and Control” in this Volume. Figure 2 is a cause-and-effect diagram for defects in composite lay-ups that are described in this article. Fig. 1 Sequence of tasks associated with lay...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003465
EISBN: 978-1-62708-195-5
... the thermophysical and kinetic properties of materials. Uses for polymers include monitoring the cure of thermosetting resins, measuring the degree of cure of the final product, studying crystallinity in thermoplastics, studying the compatibility of multiphase systems ( Ref 1 , 2 ), and identifying transitions...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003405
EISBN: 978-1-62708-195-5
... Abstract Elastomeric tooling uses rubber details to generate required molding pressure or to serve as a pressure intensifier during composite part curing cycles. This article discusses the various aspects of the forms of commercially available bag-side elastomeric caul systems. It describes...
Book Chapter

By John E. Moalli
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003461
EISBN: 978-1-62708-195-5
... with adhesives, the curing of which can affect strength and ultimate performance. Proper curing, as well as minimization of voids and contaminants, are important items to monitor during adhesive bonding. Other types of mechanical joints also need to be monitored carefully during assembly. For example...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003036
EISBN: 978-1-62708-200-6
... unidirectional or chopped fibers and for mat or woven fabric forms. In the hand lay-up technique, fiber is hand-positioned in or on a mold and liquid resin is poured onto the fiber. Cure occurs at room temperature with no applied pressure. Tools roll the blend to work out air bubbles and ensure complete...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003045
EISBN: 978-1-62708-200-6
... properties. Once the lay-up has been completed and bagged, it is usual practice to verify vacuum integrity of the system. The interior bag pressure should be monitored during cure. Traditionally, the bag is evacuated, disconnected from the vacuum source, and the leak rate measured over a specified period...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006011
EISBN: 978-1-62708-172-6
... containing at least two hydroxyl (alcohol) groups. This article provides a detailed account of the protective coatings used in the building, infrastructure, and architectural markets. It focuses on the various types of polyurethane coatings used in these applications: moisture-cure and two-pack aromatic...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006916
EISBN: 978-1-62708-395-9
... of chemical reactions that start the polymerization and branching reactions which result in a crosslinked network. Completion of the cure reaction ultimately results in a fully cured, crosslinked network. Thermoset processing requires attention to the molding or part forming process, as well as monitoring...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005354
EISBN: 978-1-62708-187-0
... or no cure. It can also contribute to the acceleration of the cure rate in basic catalyzed systems to a point where the sand is cured before it can be used. The ADV test can also be used to monitor acid buildups in acid-cured reclaimed sands and to check for influxes of basic contaminants into the sand...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003433
EISBN: 978-1-62708-195-5
... for the tool has shifted from a check of the end product quality to one of in- process monitoring. The use of sophisticated software and optimization programs along with modern fabrication and inspection systems means that the owner of a particular task (for example, designer, numerical control programmer...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003041
EISBN: 978-1-62708-200-6
... in computer technology have greatly increased the ability to monitor and control cure cycles. Progress in the past 5 years rivals that in the preceding 20 years. The objectives have been to increase the reproducibility of repetitive cycles, improve throughput by optimizing process parameters, and reduce labor...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006036
EISBN: 978-1-62708-172-6
... and curing characteristics and performance properties of polyaspartic coatings. It also provides information on curing corrosion protection coating systems, polyaspartic floor coatings, and safe-use recommendations for handling isocyanates. corrosion protection esters humidity isocyanates...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005672
EISBN: 978-1-62708-198-6
... Abstract This article provides an overview of curing techniques, adhesive chemistries, surface preparation, adhesive selection, and medical applications of adhesives. The curing techniques are classified into moisture, irradiation, heat, and anaerobic. The article highlights the common types...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006968
EISBN: 978-1-62708-439-0
... sides of the part ( Ref 60 ) or on the bottom of the substrate right below the part, as shown in Fig. 8 ( Ref 59 ). In VPP, liquid resin and cured resin have different acoustic propagation characteristics, allowing for monitoring the cure state of resins ( Ref 83 ). The feasibility of UT technology...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003695
EISBN: 978-1-62708-182-5
.... The collection and production of raw natural rubber from plantations rely principally on acid coagulation to concentrate the latex (caoutchouc). The raw plant sap (latex) is collected and processed in large tanks, where formic or acetic acid is introduced as the coagulating agent. Subsequent drying, curing...