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Production, Repairing and Testing of Hemp Reinforced Recycled HDPE Composites.

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Title: Production, Repairing and Testing of Hemp Reinforced Recycled HDPE Composites.
Authors: El Hawary, Omar1 (AUTHOR), Boccarusso, Luca2 (AUTHOR) luca.boccarusso@unina.it, Durante, Massimo2 (AUTHOR), Panico, Martina2 (AUTHOR), Pinto, Fulvio1 (AUTHOR)
Source: Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ). Feb2026, Vol. 51 Issue 3, p2977-2997. 21p.
Subject Terms: *Hemp, *High density polyethylene, *Mechanical behavior of materials, *Impact testing, *Composite material manufacturing, *Nondestructive testing, *Hot pressing, *Biomaterials
Abstract: This study explores the development and reparability of hemp fabric-reinforced recycled high-density polyethylene (r-HDPE) composites. Through hot press forming technique, laminates were fabricated and subjected to iterative testing cycles, including low-velocity impact and three-point bending tests. Post-damage repair was achieved via remoulding, assessing the evolution of mechanical properties over four repair cycles. Novelty lies in demonstrating the reparability and prolonged usability of these composites, highlighting their potential as a sustainable alternative to virgin HDPE. Results indicate enhanced impact resistance of hemp/HDPE compared to pure HDPE with an Fmax of 1500 N (45% higher than r-HDPE at 1034 N), while retaining structural integrity after multiple repairs. Advanced imagining techniques, such as CT scanning and phased array ultrasonic testing, provided detailed insights into damage mechanisms like matrix cracking and fibre debonding. While flexural strength decreased with repeated cycles, the composites maintained good performance under impact conditions especially considering impact energies lower than 10 J, at which repairing is possible without significant deterioration of impact properties, as the fibres are not significantly damaged. These findings position hemp/r-HDPE composites as viable, eco-friendly materials, aligning with circular economy principles by utilizing recycled polymers and vegetable fibres. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 192432425
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Production, Repairing and Testing of Hemp Reinforced Recycled HDPE Composites.
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  Data: *<searchLink fieldCode="DE" term="%22Hemp%22">Hemp</searchLink><br />*<searchLink fieldCode="DE" term="%22High+density+polyethylene%22">High density polyethylene</searchLink><br />*<searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br />*<searchLink fieldCode="DE" term="%22Impact+testing%22">Impact testing</searchLink><br />*<searchLink fieldCode="DE" term="%22Composite+material+manufacturing%22">Composite material manufacturing</searchLink><br />*<searchLink fieldCode="DE" term="%22Nondestructive+testing%22">Nondestructive testing</searchLink><br />*<searchLink fieldCode="DE" term="%22Hot+pressing%22">Hot pressing</searchLink><br />*<searchLink fieldCode="DE" term="%22Biomaterials%22">Biomaterials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study explores the development and reparability of hemp fabric-reinforced recycled high-density polyethylene (r-HDPE) composites. Through hot press forming technique, laminates were fabricated and subjected to iterative testing cycles, including low-velocity impact and three-point bending tests. Post-damage repair was achieved via remoulding, assessing the evolution of mechanical properties over four repair cycles. Novelty lies in demonstrating the reparability and prolonged usability of these composites, highlighting their potential as a sustainable alternative to virgin HDPE. Results indicate enhanced impact resistance of hemp/HDPE compared to pure HDPE with an Fmax of 1500 N (45% higher than r-HDPE at 1034 N), while retaining structural integrity after multiple repairs. Advanced imagining techniques, such as CT scanning and phased array ultrasonic testing, provided detailed insights into damage mechanisms like matrix cracking and fibre debonding. While flexural strength decreased with repeated cycles, the composites maintained good performance under impact conditions especially considering impact energies lower than 10 J, at which repairing is possible without significant deterioration of impact properties, as the fibres are not significantly damaged. These findings position hemp/r-HDPE composites as viable, eco-friendly materials, aligning with circular economy principles by utilizing recycled polymers and vegetable fibres. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1007/s13369-025-10170-5
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      – Code: eng
        Text: English
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        PageCount: 21
        StartPage: 2977
    Subjects:
      – SubjectFull: Hemp
        Type: general
      – SubjectFull: High density polyethylene
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Impact testing
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      – SubjectFull: Composite material manufacturing
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      – SubjectFull: Nondestructive testing
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      – SubjectFull: Hot pressing
        Type: general
      – SubjectFull: Biomaterials
        Type: general
    Titles:
      – TitleFull: Production, Repairing and Testing of Hemp Reinforced Recycled HDPE Composites.
        Type: main
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          Name:
            NameFull: El Hawary, Omar
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            NameFull: Boccarusso, Luca
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            NameFull: Durante, Massimo
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            NameFull: Panico, Martina
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            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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            – TitleFull: Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. )
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