In-Plane Shear Strength of Single-Lap Co-Cured Joints of Self-Reinforced Polyethylene Composites

Autor: Annelise Kopp Alves, Eduardo da Silva Fernandes, Carlos Perez Bergmann, Giangiacomo Minak, Felipe Vannucchi de Camargo, Carla Schwengber ten Caten
Přispěvatelé: de Camargo F.V., Fernandes E.D.S., Ten Caten C.S., Alves A.K., Bergmann C.P., Minak G.
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Materials science
Thermoplastic
LDPE
Stress analysis
UHMWPE
design of experiment
Mechanical properties
02 engineering and technology
mechanical properties
010402 general chemistry
Propriedades mecânicas
01 natural sciences
lcsh:Technology
Article
Stress (mechanics)
chemistry.chemical_compound
Ultimate tensile strength
Shear strength
Thermoplastic composite
General Materials Science
Análise de tensões
Composite material
lcsh:Microscopy
Joint (geology)
lcsh:QC120-168.85
chemistry.chemical_classification
Design of experiment
Structural material
lcsh:QH201-278.5
lcsh:T
thermoplastic composites
Polyethylene
021001 nanoscience & nanotechnology
Cisalhamento
0104 chemical sciences
Low-density polyethylene
Thermoplastic composites
chemistry
Compósitos termoplásticos
lcsh:TA1-2040
Stress analysi
stress analysis
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
0210 nano-technology
lcsh:Engineering (General). Civil engineering (General)
Mechanical propertie
lcsh:TK1-9971
Zdroj: Materials
Volume 14
Issue 6
Materials, Vol 14, Iss 1517, p 1517 (2021)
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
ISSN: 1996-1944
DOI: 10.3390/ma14061517
Popis: The present study introduces the analysis of single-lap co-cured joints of thermoplastic self-reinforced composites made with reprocessed low-density polyethylene (LDPE) and reinforced by ultra-high-molecular-weight polyethylene (UHMWPE) fibers, along with a micromechanical analysis of its constituents. A set of optimal processing conditions for manufacturing these joints by hot-press is proposed through a design of experiment using the response surface method to maximize their in-plane shear strength by carrying tensile tests on co-cured tapes. Optimal processing conditions were found at 1 bar, 115 °C, and 300 s, yielding joints with 6.88 MPa of shear strength. The shear failure is generally preceded by multiple debonding-induced longitudinal cracks both inside and outside the joint due to accumulated transversal stress. This composite demonstrated to be an interesting structural material to be more widely applied in industry, possessing extremely elevated specific mechanical properties, progressive damage of co-cured joints (thus avoiding unannounced catastrophic failures) and ultimate recyclability.
Databáze: OpenAIRE
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