Failure of compression molded all-polyolefin composites studied by acoustic emission
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چکیده
منابع مشابه
Characterization and Compression Properties of Injection Molded Carbon Nanotube Composites
Since the development of carbon nanotubes (CNTs) in 1991, they have received much attention with improved mechanical, thermal, and electrical properties of their composites compared to common polymer composites. The CNTs are currently used to increase the modulus of common thermoplastics and thermosets, including urethanes and epoxies. The CNTs are difficult to disperse within any media because...
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Since the development of carbon nanotubes (CNTs) in 1991, they have received much attention with improved mechanical, thermal, and electrical properties of their composites compared to common polymer composites. This study evaluated the effect of incorporating bundled and unbundled carbon nanotubes into Polyurethane/CNT/woven fiber reinforced composites. Atomic Force Microscopy (AFM) was used t...
متن کاملCharacteristics of Acoustic Emission Signals from Composites
Certain characteristics of acoustic emission (AE) signals from graphite-epoxy composite specimens were correlated last year with the mechanical behavior of the materials. Moisture degradation, which reduced the ultimate strength, resulted in a change in the AE amplitude distribution early in the loading history. Also, AE having distinct frequency spectral types tended to occur at or near singul...
متن کاملFailure strengths of denture teeth fabricated on injection molded or compression molded denture base resins.
STATEMENT OF PROBLEM Denture tooth fracture or debonding remains a common problem in removable prosthodontics. PURPOSE The purpose of this in vitro study was to explore factors determining failure strengths for combinations of different denture tooth designs (shape, materials) and injection or compression molded denture base resins. MATERIAL AND METHODS Three central incisor denture tooth d...
متن کاملInterfaces in Thermoplastic Composites Probed by Laser-Induced Acoustic Emission
The mechanical properties and durability of carbon Þber composites depend not only on the properties of the constituent Þber and matrix but also on the quality of the interfacial bond. Many of the techniques for evaluating this bonding rely on model (e. g. single Þlament) composites (1-3). Besides being difÞcult to prepare and test, these specimens are subject to the criticism that they may not...
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ژورنال
عنوان ژورنال: Express Polymer Letters
سال: 2015
ISSN: 1788-618X
DOI: 10.3144/expresspolymlett.2015.29