Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

You searched for id:"handle:10388/13149". One record found.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


University of Saskatchewan

1. Abdulganiyu, Ibraheem Adekunle. THE INFLUENCE OF MICROFILLER ADDITION ON THE FLEXURAL AND IMPACT BEHAVIOR OF CARBON FIBER REINFORCED PHENOLIC.

Degree: 2020, University of Saskatchewan

In this study, the effects of microfiller addition on flexural and dynamic impact behavior of carbon fiber reinforced phenolic matrix composites were investigated. The composite materials were produced using 2D woven PAN-based carbon fibers and two variants of phenolic resins (HRJ-15881 and SP-6877). The resins have the same phenol and solid content but differ in their viscosities and HCHO (formaldehyde) content. Colloidal silica and silicon carbide (SiC) microparticles were used as fillers and were added to the phenolic matrix in four weight fractions; namely 0.5 wt.%, 1.0 wt.%, 1.5 wt.%, and 2.0 wt.%. Thermogravimetric analysis (TGA) was used for thermal analysis of the phenolic resins. The flexural properties were determined using a three-point bending test, while the dynamic impact properties were determined using the Split Hopkinson pressure bar (SHPB). The damage evolutions under both loading conditions were investigated using optical and scanning electron microscopy. Thermal analysis results indicated that a cross-linking reaction occurred in both phenolic resins in the temperature range 110-130 °C and decomposition of the resin to form amorphous carbon began around 450 °C. The reinforcement of HRJ-15881 and SP-6877 phenolic resins with carbon fibers increased their flexural strength by 508% and 909%, respectively. The flexural strength of the carbon fiber reinforced phenolic (CFRP) composites further increased with the addition of SiC particles up to 1 wt.% SiC, but decreased with further increase in the amount of SiC particles added. On the other hand, the flexural modulus of the composites generally decreased with the addition of SiC microfiller. Both the flexural strength and flexural modulus of the composites did not improve with the addition of colloidal silica microfiller. The decrease in flexural properties was caused by the agglomeration of the microfillers at higher filler content, with colloidal silica particles exhibiting more tendency for agglomeration than SiC particles. Microscopic evaluation of the fractured specimens revealed fiber breakage, matrix cracking, and delamination under flexural loading. The tendency for cracking and fragmentation worsened at a microfiller loading of 1.5 wt.% and above. Two impact momenta were applied in the dynamic impact testing of the fabricated CFRP: 15 kg m/s and 28 kg m/s. At an impact momentum of 15 kg m/s, the dynamic impact strength increased with SiC addition for HRJ-15881 resin up to 1.5 wt.% and up to 0.5 wt.% for SP-6877 resin. At an impact momentum of 28 kg m/s, the dynamic impact strength increased at all SiC addition for SP-6877 resin, and up to 0.5 wt.% for HRJ-15881 resin. However, the impact strength deteriorated with colloidal silica addition for both phenolic resins and at both impact momentums. For CFRP with and without microfiller addition, no specimen fragmentation occurred at the impact momentum of 15 kg m/s. However, the CFRP without microfillers failed at an impact momentum of 28 kg m/s. Failure was observed to occur only in CFRP… Advisors/Committee Members: Odeshi, Akindele, Oguocha, Ikechukwuka, Szpunar, Jerzy, Shafiq, Alam.

Subjects/Keywords: Carbon Fiber Reinforced Phenolic (CFRP); Microfillers; Flexural Properties; Dynamic Impact Properties; Fractography; Composites

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Abdulganiyu, I. A. (2020). THE INFLUENCE OF MICROFILLER ADDITION ON THE FLEXURAL AND IMPACT BEHAVIOR OF CARBON FIBER REINFORCED PHENOLIC. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/13149

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Abdulganiyu, Ibraheem Adekunle. “THE INFLUENCE OF MICROFILLER ADDITION ON THE FLEXURAL AND IMPACT BEHAVIOR OF CARBON FIBER REINFORCED PHENOLIC.” 2020. Thesis, University of Saskatchewan. Accessed January 16, 2021. http://hdl.handle.net/10388/13149.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Abdulganiyu, Ibraheem Adekunle. “THE INFLUENCE OF MICROFILLER ADDITION ON THE FLEXURAL AND IMPACT BEHAVIOR OF CARBON FIBER REINFORCED PHENOLIC.” 2020. Web. 16 Jan 2021.

Vancouver:

Abdulganiyu IA. THE INFLUENCE OF MICROFILLER ADDITION ON THE FLEXURAL AND IMPACT BEHAVIOR OF CARBON FIBER REINFORCED PHENOLIC. [Internet] [Thesis]. University of Saskatchewan; 2020. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10388/13149.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Abdulganiyu IA. THE INFLUENCE OF MICROFILLER ADDITION ON THE FLEXURAL AND IMPACT BEHAVIOR OF CARBON FIBER REINFORCED PHENOLIC. [Thesis]. University of Saskatchewan; 2020. Available from: http://hdl.handle.net/10388/13149

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.