Analysis of mechanical and water absorption properties of hybrid composites reinforced with micron-size bamboo fibers and ceramic particles / Danish Tahir in INTERNATIONAL POLYMER PROCESSING, Vol. 39, N° 1 (2024)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. 39, N° 1 (2024) . - p. 115-124 Titre : Analysis of mechanical and water absorption properties of hybrid composites reinforced with micron-size bamboo fibers and ceramic particles Type de document : texte imprimé Auteurs : Danish Tahir, Auteur ; Muhammad Ramzan Abdul Karim, Auteur ; Hong Hu, Auteur Année de publication : 2024 Article en page(s) : p. 115-124 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Charges (matériaux) Composites à fibres végétales Composites à fibres végétales -- Propriétés mécaniques Epoxydes Fibres de bambous Humidité -- Absorption:Eau -- Absorption Index. décimale : 668.4 Plastiques, vinyles Résumé : Bamboo and its hybrid composites were made using the hand lay-up method to evaluate the change in mechanical and physical properties that occurred through filler addition. Density measurements and tensile test results showed an increment in values when a certain percentage of silicon carbide (SiC) was added. As the SiC percentage grows from 0 to 6 %, the density of the hybrid composite increases from 1.15 to 1.36 gm/cc whereas tensile strength increases from 37 MPa to 42 MPa when 4 wt% SiC is added in 20 wt% of the bamboo composite. The scanning electron microscopy (SEM) analysis of tensile fractured samples further supported the improvement in tensile characteristics. To examine the impact and hardness characteristics, composites were subjected to the Charpy impact test and hardness test. 4 wt% of SiC addition in 20 wt% of the bamboo composite decreased the impact strength from 28.79 to 27.43 (×10−3 kJ/m2) and increased the hardness from 44 to 55 Hv. The composites’ water absorption behavior demonstrated that the addition of filler lifts the composite’s resistance to absorbing water, preserving the composites’ dimensional firmness and mechanical qualities. Note de contenu : - EXPERIMENTAL : Materials and methods - Characterization - RESULTS AND DISCUSSION : Physical and tensile properties of composites - Energy absorption and hardness of composites - Water absorption characteristics of composites - Table 1 : Density values of bamboo composites DOI : https://doi.org/10.1515/ipp-2023-4374 En ligne : https://drive.google.com/file/d/1_LQdwWpWxiXg5E4U3DmEmUmGM3FqbGdC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40855 [article]

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Impact of fiber diameter on mechanical and water absorption properties of short bamboo fiber-reinforced polyester composites / Danish Tahir in INTERNATIONAL POLYMER PROCESSING, Vol. 39, N° 3 (2024)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. 39, N° 3 (2024) . - p. 317-326 Titre : Impact of fiber diameter on mechanical and water absorption properties of short bamboo fiber-reinforced polyester composites Type de document : texte imprimé Auteurs : Danish Tahir, Auteur ; Muhammad Ramzan Karim, Auteur ; Shuying Wu, Auteur ; Muhammad Rehan, Auteur ; Muhammad Tahir, Auteur ; Sheher Bano Zaigham, Auteur ; Nishat Riaz, Auteur Année de publication : 2024 Article en page(s) : p. 317-326 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composites à fibres courtes Composites à fibres végétales Composites à fibres végétales -- Propriétés mécaniques Diamètre des fibres Fibres de bambous Humidité -- Absorption:Eau -- Absorption Polyesters Index. décimale : 668.4 Plastiques, vinyles Résumé : This study aims to investigate the effect of fiber diameter on the mechanical and water absorption characteristics of short bamboo fiber-reinforced polyester composites. Three different fiber sizes (180–250 µm, 250–500 µm, and 700–1000 µm) were used to prepare composites with varying fiber loadings of 10 wt.%, 20 wt.%, and 30 wt.%. The fabricated composites were cut to standard dimensions, and tension tests, impact tests, and water absorption tests were performed. Reproducible results were obtained, revealing that using fibers of smaller diameter (180–250 µm) increased the tensile strength of the composite by 20 % compared to composites with larger diameter fibers (700–1000 µm), while the tensile modulus showed a 22 % enhancement with decreasing fiber diameter. Composites with larger diameter fibers exhibited more defects (voids and matrix detachment), as revealed by SEM analysis of fractured surfaces. The impact strength of composites with a diameter size of 700–1000 µm increased by 33 % compared to composites reinforced with the smallest fiber diameter. Water absorption of the composites was also studied by long-term immersion in water, showing that water intake was high initially, reaching a saturation point after a certain time interval. The absorbed water values indicated that composites with the smallest diameter (180–250 µm) showed maximum water intake due to the creation of more water intake sites (increased interfacial area), while composites with the largest diameter fibers (700–1000 µm) exhibited the least water absorption as the interaction region between fibers and matrix was reduced. Note de contenu : - EXPERIMENTAL : Materials - Extraction and characterization of bamboo fibers - Production and characterization of composites - RESULTS AND DISCUSSION : Fiber diameter distribution - Mechanical properties of the composites under tensile and impact loading - Water absorption character of the composite DOI : https://doi.org/10.1515/ipp-2023-4458 En ligne : https://drive.google.com/file/d/1x5K286BAJNwqA-XPr3RedO0A9B7RZYQ9/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40873 [article]

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