Measurement on strain rate sensitivity properties of rice husk/ linear low density polyethylene (LLDPE) composites under various loading rates
The dynamic compression testing and static compression testing were performed using Split Hopkinson Pressure Bar (SHPB) apparatus and a conventional Universal Testing Machine (UTM), respectively. These two techniques were used to investigate the effect of strain rates towards the compressive proper...
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my-unimap-771852022-11-24T08:32:43Z Measurement on strain rate sensitivity properties of rice husk/ linear low density polyethylene (LLDPE) composites under various loading rates Mohd Firdaus, Omar, Dr. The dynamic compression testing and static compression testing were performed using Split Hopkinson Pressure Bar (SHPB) apparatus and a conventional Universal Testing Machine (UTM), respectively. These two techniques were used to investigate the effect of strain rates towards the compressive properties of rice husk (RH) reinforced with linear low density polyethylene (LLDPE) composites. The SHPB results were initially verified and calibrated. The results show that all tested RH/LLDPE composites have a greater dependency towards the strain rate applied, where the yield stress, compression modulus, and compressive strength, were all proportionally increased as the strain rate increased. Besides, the effect of filler content, silane coupling agents and particle sizes of RH/LLDPE composites under a wide range of strain rates also investigated. It can be clearly seen that the introduction of rice husk filler into LLDPE matrix increased the composite’s compressive properties, including yield stress, compression modulus and compressive strength. It was also found that the filler content showed insignificant relationship with strain rate sensitivity and thermal activation volume. For the effect of silane coupling agent, the results indicate that compressive strength, stiffness properties and yield behaviour were improved for treated RH/LLDPE composites. Meanwhile, silane coupling agent showed significant relationship with strain rate sensitivity and thermal activation volume. As for the effect of particle size, it was found that the size of rice husk gave significant effects on the compressive properties of RH/LLDPE composites. The composites with smaller particle size has recorded higher compressive properties, in terms of yield strength, strength and stiffness as compared to composites with larger particle sizes. For the post damage analysis, the results show that applied strain rates affected the deformation behaviour of tested RH/LLDPE composites while at dynamic loading, the fracture surface analysis of the composites was examined. Overall, it can be concluded that these research finding can widen the scope of research area that related to the strain rate under dynamic loading for natural filler reinforced composites, and these RH/LLDPE composites also have the high potential to be applied in the industry application. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77185 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77185/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77185/1/Page%201-24.pdf 12bbdd84fa563e189143ff8724598812 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77185/2/Full%20text.pdf 2a11657359c9ff035d8736c0955d928c http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77185/4/Nur%20Suhaili.pdf 40560b50d9ba170fb85d79d249499d5a Universiti Malaysia Perlis (UniMAP) Materials -- Mechanical properties Composite materials Thermoplastics Reinforced plastics Rice husk Linear Low Density Polyethylene (LLDPE) School of Materials Engineering |
| institution |
Universiti Malaysia Perlis |
| collection |
UniMAP Institutional Repository |
| language |
English |
| advisor |
Mohd Firdaus, Omar, Dr. |
| topic |
Materials -- Mechanical properties Composite materials Thermoplastics Reinforced plastics Rice husk Linear Low Density Polyethylene (LLDPE) |
| spellingShingle |
Materials -- Mechanical properties Composite materials Thermoplastics Reinforced plastics Rice husk Linear Low Density Polyethylene (LLDPE) Measurement on strain rate sensitivity properties of rice husk/ linear low density polyethylene (LLDPE) composites under various loading rates |
| description |
The dynamic compression testing and static compression testing were performed using Split Hopkinson Pressure Bar (SHPB) apparatus and a conventional Universal Testing Machine (UTM), respectively. These two techniques were used to
investigate the effect of strain rates towards the compressive properties of rice husk (RH) reinforced with linear low density polyethylene (LLDPE) composites. The SHPB results were initially verified and calibrated. The results show that all tested RH/LLDPE composites have a greater dependency towards the strain rate applied, where the yield stress, compression modulus, and compressive strength, were all proportionally increased as the strain rate increased. Besides, the effect of filler content, silane
coupling agents and particle sizes of RH/LLDPE composites under a wide range of strain rates also investigated. It can be clearly seen that the introduction of rice husk filler into LLDPE matrix increased the composite’s compressive properties, including
yield stress, compression modulus and compressive strength. It was also found that the filler content showed insignificant relationship with strain rate sensitivity and thermal activation volume. For the effect of silane coupling agent, the results indicate that compressive strength, stiffness properties and yield behaviour were improved for treated RH/LLDPE composites. Meanwhile, silane coupling agent showed significant relationship with strain rate sensitivity and thermal activation volume. As for the effect
of particle size, it was found that the size of rice husk gave significant effects on the compressive properties of RH/LLDPE composites. The composites with smaller particle size has recorded higher compressive properties, in terms of yield strength, strength and stiffness as compared to composites with larger particle sizes. For the post damage
analysis, the results show that applied strain rates affected the deformation behaviour of
tested RH/LLDPE composites while at dynamic loading, the fracture surface analysis of
the composites was examined. Overall, it can be concluded that these research finding
can widen the scope of research area that related to the strain rate under dynamic
loading for natural filler reinforced composites, and these RH/LLDPE composites also
have the high potential to be applied in the industry application. |
| format |
Thesis |
| title |
Measurement on strain rate sensitivity properties of rice husk/ linear low density polyethylene (LLDPE) composites under various loading rates |
| title_short |
Measurement on strain rate sensitivity properties of rice husk/ linear low density polyethylene (LLDPE) composites under various loading rates |
| title_full |
Measurement on strain rate sensitivity properties of rice husk/ linear low density polyethylene (LLDPE) composites under various loading rates |
| title_fullStr |
Measurement on strain rate sensitivity properties of rice husk/ linear low density polyethylene (LLDPE) composites under various loading rates |
| title_full_unstemmed |
Measurement on strain rate sensitivity properties of rice husk/ linear low density polyethylene (LLDPE) composites under various loading rates |
| title_sort |
measurement on strain rate sensitivity properties of rice husk/ linear low density polyethylene (lldpe) composites under various loading rates |
| granting_institution |
Universiti Malaysia Perlis (UniMAP) |
| granting_department |
School of Materials Engineering |
| url |
http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77185/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77185/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77185/4/Nur%20Suhaili.pdf |
| _version_ |
1776104247839948800 |