Chan, Jia Xin and Wong, Joon Fatt and Hassan, Azman and Othman, Norhayani and Abd Razak, Jeefferie and Nirmal, Umar and Hashim, Shahrir and Ching, Yern Chee and Yunos, Muhamad Zaini and Yahaya, Ridwan and Gunathilake, T. M. Sampath U. (2023) Mechanical, thermal, tribological, and flammability properties of polybutylene terephthalate composites: Comparing the effects of synthetic wollastonite nanofibers, natural wollastonite, and graphene oxide. Journal of Applied Polymer Science, 140 (6). ISSN 0021-8995

Chan, Jia Xin and Wong, Joon Fatt and Hassan, Azman and Othman, Norhayani and Razak, Jeefferie Abd and Nirmal, Umar and Hashim, Shahrir and Ching, Yern Chee and Yunos, Muhamad Zaini and Gunathilake, T.M. Sampath U. (2023) Enhanced tribological and mechanical properties of polybutylene terephthalate nanocomposites reinforced with synthetic wollastonite nanofibers/graphene oxide hybrid nanofillers. Diamond and Related Materials, 135. p. 109835. ISSN 0925-9635

Nirmal, Umar (2022) Adhesive Wear and Frictional Performance of Banana Fibre Reinforced Epoxy (BaFRE) Composite. Polymers (Basel), 14 (17). p. 3700. ISSN 2073-4360

Tan, Jennise Teng Teng and Yaakob, Mohd Yuhazri and Husin, Mohd Amirhafizan and Mohamed, Kamarul Amir and Yuzrina, Myia and Lau, S. T. W. and Nirmal, Umar and Ian Pieter, Hasoloan Haery (2022) Flexural and Out-of-Plane Compression Performance of Hexagonal Rubber Wood Core Sandwich with Increasing Cell Wall Thickness. Manufacturing Technology, 22 (2). pp. 240-253. ISSN 1213-2489

Nirmal, Umar and Pokaad, Alif Zulfakar and Lau, Saijod Tze Way and Megat Ahmad, Mohd Megat Hamdan and Yaakob, Mohd Yuhazri and Singh, Jasspeed and Fairozan, Mohd (2022) The Impact of Covid-19 on Human Rescue Operations: A Review on Past Unmanned - Water Rescue Boats (U-Wrb) and Adopting Them to The New Norm. Journal of Engineering Technology and Applied Physics, 4 (1). pp. 7-15. ISSN 2682-8383

Chan, Jia Xin and Wong, Joon Fatt and Hassan, Azman and Othman, Norhayani and Abd Razak, Jeefferie and Nirmal, Umar and Hashim, Shahrir and Yern, Chee Ching and Yunos, Muhamad Zaini and Yahaya, Ridwan and Gunathilake, T.M. Sampath U. (2022) Synthetic wollastonite nanofiber for polybutylene terephthalate nanocomposite: Mechanical, thermal, tribological and flammability properties. Polymer, 256. p. 125259. ISSN 0032-3861

Chan, Jia Xin and Wong, Joon Fatt and Petrů, Michal and Hassan, Azman and Nirmal, Umar and Othman, Norhayani and Ilyas, Rushdan Ahmad (2021) Effect of Nanofillers on Tribological Properties of Polymer Nanocomposites: A Review on Recent Development. Polymers (Basel), 13 (17). p. 2867. ISSN 2073-4360

Mhd Noor, Ervina Efzan and Abdalla, Hana and Nirmal, Umar (2021) Review on the Al2O3 nanoparticle reinforcement effect on thermal and mechanical properties of SAC alloys. In: AIP Conference Proceedings.

Nirmal, Umar and Singh, Jasspeed and Velu, Vengadeshwaran and Shafeek, Mohamed Aqeel (2021) A Review on Building Energy Index (BEI) in Different Green Government Buildings (GGBs) in Malaysia. Malaysian Journal of Science and Advanced Technology, 1 (2). pp. 46-56. ISSN 2785-8901

Nirmal, Umar and Anton, Eric and Ng, Poh Kiat and Chin, Chee Wen (2021) A Review of Modular Ergonomic Furniture Patents. Journal of Engineering Technology and Applied Physics(JETAP), 3 (2). pp. 1-6. ISSN 2682-8383

Lim, Jenn Chyuan and Ng, Poh Kiat and Nirmal, Umar (2021) A TRIZ-Aided approach in exploring wallet neuropathy and pickpocketing issues. ARPN Journal of Engineering and Applied Sciences, 16 (2). pp. 270-279. ISSN 1819-6608

Eid Alajmi, Ayedh and Alotaibi, Jasem Gh. and Yousif, B. F. and Nirmal, Umar (2021) Tribological Studies of Bamboo Fibre Reinforced Epoxy Composites Using a BOD Technique. Polymers (Basel), 13 (15). p. 2444. ISSN 2073-4360

Singh, Jasspeed and Velu, Vengadeshwaran and Nirmal, Umar (2021) Vehicle Accident Detection System using Internet of Things (VADS -IoT). In: 2021 IEEE 11th IEEE Symposium on Computer Applications & Industrial Electronics (ISCAIE), 3-4 April 2021, Penang, Malaysia.

Nirmal, Umar and Chin, C. W. and Yuhazri, M. Y. and Amirhafizan, M. H. and Megat Ahmad, M. M. H. (2020) On the improvement of tribological performance using treated betelnut fiber reinforced polyester (T-BFRP) and Teflon composite for automotive applications. In: Biocomposite and Synthetic Composites for Automotive Applications. Woodhead Publishing Series in Composites Science and Engineering (1). Woodhead Publishing, pp. 107-146. ISBN 978-0-12-820923-3, 9780128205594

Nirmal, Umar and Sharveswaran, A (2020) Research Development on Wiper Mechanism in Automotive Application: A Critical Review. Current Journal of Applied Science and Technology, 39 (35). pp. 133-161. ISSN 2457-1024

Ng, Poh Kiat and Nirmal, Umar and Nuraresya, Ibun (2019) A Comprehensive Review on the Development of Car Booster Seats for Children. Current Journal of Applied Science and Technology, 38 (1). pp. 1-21. ISSN 2457-1024

Mhd Noor, Ervina Efzan and Wong, Wei Syuen and Nirmal, Umar (2019) Review on Research and Developments of Sinks for Various Applications. Current Journal of Applied Science and Technology, 35 (3). pp. 1-26. ISSN 2457-1024

Lau, Saijod Tze Way and Nirmal, Umar and Murugan, Sharmeeni and Tang, W. C. (2019) A Review on Managing Solid Waste Produced from Homes in Malaysia. Current Journal of Applied Science and Technology, 34 (5). pp. 1-23. ISSN 2457-1024

Nirmal, Umar and Lau, Saijod T. W. and Lim, J. J. and Eugene, C. Z. (2019) Battery Powered RC Boats: A Review of Its Developments for Various Applications. Current Journal of Applied Science and Technology, 33 (5). pp. 1-29. ISSN 2457-1024

Nirmal, Umar and Koh, B. X. and Yuhazri, M. Y. (2019) Developments on Baby Strollers over the Last Decade. Current Journal of Applied Science and Technology, 33 (6). pp. 1-25. ISSN 2457-1024

Chan, Y K and Cheaw, W G and Nirmal, Umar (2018) Progress on drone technology and their applications: A comprehensive review. In: AIP Conference Proceedings 2030, 020308 (2018), 2018.

Nirmal, Umar (2018) Friction Performance of Aged T-BFRP Composite for Bearing Applications. Polymers (Basel), 10 (10). ISSN 2073-4360

Chin, Jie Wong and Nirmal, Umar and Murugan, Sharmeeni and Liu, Jun (2018) Design reviews on a multipurpose power sockets for different applications. Cogent Engineering, 5 (1). pp. 1-34. ISSN 2331-1916

Nirmal, Umar and Kamarul, A. M. and Yuhazri, M. Y. and Megat Ahmad, M. M. H. (2018) Degradation behaviour of treated betelnut fibres reinforced polyester composites for tribological applications. World Review of Science, Technology and Sustainable Development, 14 (2/3). pp. 180-227. ISSN 1741-2242

Yuhazri, M. Y. and Amirhafizan, M. H. and Nilson, G. C. H. and Sihombing, H. and Kamarul, A. M. and Nirmal, Umar (2018) Effects of gelcoat thickness on mechanical properties of woven glass/polyester laminated composite. Journal of Mechanical Engineering and Sciences, 12 (1). pp. 3370-3386. ISSN 2289-4659, 2231-8380

Devadas, Alvin and Nirmal, Umar and Hossen, Md. Jakir (2018) Investigation into mechanical & tribological performance of kenaf fibre particle reinforced composite. Cogent Engineering, 5 (1). pp. 1-23. ISSN 2331-1916

Nirmal, Umar and Moataz Albawab, Tarek Mhd and Halim, Isa and Ahmed Salem, Mohammed and ALsayed, Mahmoud and Singh, Jasspeed (2018) A Review on Tribological Wear Test Rigs for Various Applications. International Journal of Integrated Engineering, 10 (8). pp. 202-217. ISSN 2229-838X

Nirmal, Umar and Hashim, Jamil and Megat Ahmad, M. M. H. and Yuhazri, M. Y. (2018) Surface Roughness Analysis of Stainless Steel Counterface (AISI-304) Subjected to Treated Betelnut Fiber–Reinforced Polyester (T-BFRP) Composites Aged in Different Solutions with Different Kinematic Viscosity. Materials Performance and Characterization, 7 (3). p. 20170085. ISSN 23791365

Sehat, A. R. and Nirmal, Umar and Jin, Zhongmin (2017) State of the art baby strollers: Design review and the innovations of an ergonomic baby stroller. Cogent Engineering, 4 (1). ISSN 2331-1916

Nirmal, Umar and Hashim, Jamil (2015) A review on tribological performance of natural fibre polymeric composites. Tribology International, 83. pp. 77-104. ISSN 0301-679X

Liew, K. W. and Nirmal, Umar (2013) Frictional performance evaluation of newly designed brake pad materials. Materials & Design, 48. pp. 25-33. ISSN 0261-3069

Nirmal, Umar and Abdullahi, U. and Maleque, M. A. (2013) Wear mechanisms map of CNT-Al nano-composite. Procedia Engineering, 68. pp. 736-742. ISSN 1877-7058

Nirmal, Umar and Hashim, Jamil and Low, K.O. (2012) Adhesive wear and frictional performance of bamboo fibres reinforced epoxy composite. Tribology International, 47. pp. 122-133. ISSN 0301679X

Yousif, B.F. and Nirmal, Umar (2011) Wear and frictional performance of polymeric composites aged in various solutions. Wear, 272 (1). pp. 97-104. ISSN 00431648

Nirmal, Umar (2011) Betelnut Fibers As Bio-Reinforcements In Polyester Composites For Mechanical And Tribological Applications. Masters thesis, Multimedia University.