PMID- 30960154
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 11
IP  - 1
DP  - 2019 Jan 18
TI  - Analysis and Identification of the Mechanism of Damage and Fracture of 
      High-Filled Wood Fiber/Recycled High-Density Polyethylene Composites.
LID - 10.3390/polym11010170 [doi]
LID - 170
AB  - The damage and fracture of fiber reinforced polymer composites are vital 
      constraints in their applications. To understand the mechanism of damage of wood 
      fiber (WF) reinforced high density polyethylene (HDPE) composites, we used waste 
      WF and recycled HDPE (Re-HDPE) as the raw materials and prepared high-filled 
      WF/Re-HDPE composites via extrusion. The damage and fracture mode and failure 
      mechanism of the composites with different WF contents (50%, 60%, and 70%) was 
      studied under a three-point bending test by combining the acoustic emission (AE) 
      technique and scanning electron microscope (SEM) analysis. The results show that 
      AE technology can better assist in understanding the progress of damage and 
      fracture process of WF/Re-HDPE composites, and determine the damage degree, 
      damage accumulation, and damage mode. The damage and fracture process of the 
      composites presents three main stages: the appearance of initial damage, damage 
      accumulation, and destructive damage to fracture. The matrix deformation, fiber 
      breakage, interface delamination, fiber-matrix debonding, fiber pull-out, and 
      matrix cracking were the dominant modes for the damage of high-filled WF/Re-HDPE 
      composites under bending load, and the AE signal changed in different damage 
      stages and damage modes. In addition, the WF content and repeated loading had a 
      significant influence on the composite's damage and fracture. The 50% and 60% 
      WF/Re-HDPE composites produced irreversible damage when repeated load exceeded 
      75% of the maximum load, while 25% of the maximum load could cause irreversible 
      damage for 70% WF/Re-HDPE composites. The damage was accumulated owing to 
      repeated loading and the mechanical properties of the composites were seriously 
      affected.
FAU - Guo, Yong
AU  - Guo Y
AUID- ORCID: 0000-0002-7361-2441
AD  - School of Forestry and Landscape Architecture, Anhui Agricultural University, 
      Hefei 230036, China. fly828828@163.com.
FAU - Zhu, Shiliu
AU  - Zhu S
AD  - School of Forestry and Landscape Architecture, Anhui Agricultural University, 
      Hefei 230036, China. zhuslwood@163.com.
FAU - Chen, Yuxia
AU  - Chen Y
AD  - School of Forestry and Landscape Architecture, Anhui Agricultural University, 
      Hefei 230036, China. sheherose@163.com.
FAU - Li, Dagang
AU  - Li D
AD  - College of Materials Science and Engineering, Nanjing Forestry University, 
      Nanjing 210037, China. njfuldg@163.com.
LA  - eng
GR  - KJ2016A220/Key Projects of Provincial Natural Science Foundation of Universities 
      in Anhui/
GR  - 1708085MC56/Provincial Natural Science Foundation of Anhui/
PT  - Journal Article
DEP - 20190118
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC6401903
OTO - NOTNLM
OT  - acoustic emission
OT  - damage mechanics
OT  - fracture
OT  - particle-reinforced composites
OT  - recycling
COIS- The authors declare no conflict of interest.
EDAT- 2019/04/10 06:00
MHDA- 2019/04/10 06:01
PMCR- 2019/01/18
CRDT- 2019/04/10 06:00
PHST- 2018/12/24 00:00 [received]
PHST- 2019/01/10 00:00 [revised]
PHST- 2019/01/14 00:00 [accepted]
PHST- 2019/04/10 06:00 [entrez]
PHST- 2019/04/10 06:00 [pubmed]
PHST- 2019/04/10 06:01 [medline]
PHST- 2019/01/18 00:00 [pmc-release]
AID - polym11010170 [pii]
AID - polymers-11-00170 [pii]
AID - 10.3390/polym11010170 [doi]
PST - epublish
SO  - Polymers (Basel). 2019 Jan 18;11(1):170. doi: 10.3390/polym11010170.