Preventing drum brake squeal through lining modifications by Muhammad Ridhwan, Abd. Rahman, Vernin, Gregory, Abu Bakar, Abdul Rahim

“…Drum brake squeal is one of the most common and annoying types of brake noise and it usually falls in the frequency range between 0.5-16 kHz. …”

Etching performance of silicon wafers with redesigned etching drum by Dolah, Rozzeta

“…This master project addresses the major problem on wafers during etching that is wafer removal distribution throughout etching drum compartment. The etching drum has been redesigned to overcome the lower removal problem at the end of each compartment. …”
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Effects of lining thickness on squeal in drum brake assembly: experimental investigations by Hussin, M. H., Abu Bakar, A. R., Jamaluddin, M. R., Szlapka, R.

“…This paper presents the effects of brake lining thickness due to wear on drum brake squeal. Brake lining will be worn out and subsequently its thickness will be reduced after a few number of braking applications. …”
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Etching performance improvement on semiconductor silicon wafers with redesigned etching drum by Dolah, Rozzeta, Musa, Hamidon, Amrin, Astuty

“…Surface morphology and surface roughness parameters (arithmetic roughness mean; Ra and surface skewness [roughness root mean square]; Rms) using atomic force microscopy (AFM) comparison between old drum design (big wafer gap) and new drum design (smaller gap with additional PVC chip) had been analyzed. …”

Sistem perawatan minyak mentah bagi alat penuras vakum drum berputar by Ripin, Adnan, Abdul Aziz, Ramlan

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Reduction of drum brake squeal noise using constrained layer damping (CLD) by Abdulridha, Mundher Fadhil, Jusoh, Muhamad Anuwar, Abu Bakar, Abd. Rahim, Abdullah, Mohamed Ruslan

“…A three dimensional finite element (FE) model of the drum brake assembly that consists of a drum and two brake shoes is developed and analysed. …”
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Suppression of drum brake squeal through structural modifications using finite element method by Abu-Bakar, Abd. Rahim, Buang, Mohd. Reaza, Abdul Rashid, Mohd. Zam, Abdul Rahman, Roslan

“…To date, a large number of proposals have been implemented in tackling disk brake squeal but very few solutions have been forwarded in drum brake assembly. This paper attempts to propose a solution to reduce drum brake squeal through structural modifications by using the Finite Element (FE) method. …”

Reduction of motorcycle's drum brake squeal noise using constrained layer damping (CLD) by Abdulridha, Mundher Fadhil, Jusoh, Muhamad Anuwar, Abu Bakar, Abd. Rahim, Abdullah, Mohamed Ruslan

“…Brake noise, particularly squeal is the most annoying and disturbing sound to the people, With a large number of motorcycles used in Malaysia, the level of squeal noise can be very high, especially during busy or heavy traffics due to high numbers of braking applications, Thus, this paper aims to reduce potential squeal noises generated by a rear drum brake assembly of motorcycles using constrained layer damping (CLD), A three dimensional finite element (FE) model of the drum brake assembly that consists of a drum and two brake shoes is developed and analysed, Complex eigenvalue analysis (CEA) is employed to determine stability of the drum brake assembly, where positive real parts of the eigenvalues indicate an unstable modes and its associated imaginary parts indicate an unstable (squeal) frequencies. …”
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Modelling and control of an electro-mechanical drum parking brake system for vehicle rollaway prevention by Rozaini, Ahmad Humaizi

“…A mathematical modelling of the parking brake assembly based on the drum brake design was firstly developed. Then, an electronic control unit (ECU) model with different controller schemes such as proportional controller (P), and Proportional-Derivative (PD) controller was considered and simulated using MATLAB/SIMULINK to enhance its response performances. …”
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Comparison studies of resolution and noise properties between drum type and laser type film digitization systems by Mohd. Salleh, Khairul Anuar, Hamzah, Ab. Razak, Wan Hassan, Wan Muhamad Saridan

“…Results shown the averaged MTF for drum- and laser- type film digitizer at 20% modulation were 6.15 cycles/mm and 6.55 cycles/mm respectively. …”
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Optimization of oil palm empty fruit bunch degradation using crude cellulase from Aspergillus niger EFB1 in rotary drum bioreactor by Kamsani, Noratiqah

Rafting Expedition at Pahang River A Pictorial Journey by Said, Ismail

“…The drums and timber boards can be made from used materials whereas new plywoods are required for safety and durability. …”
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Brake torque analysis of fully mechanical parking brake system: theoretical and experimental approach by Ishak, M. R., Abu Bakar, A. R., Belhocine, A., Taib, J. M., Omar, W. Z. W.

“…The effect of the drum brake temperature reduction on the clamping force of the parking brake system has not been well addressed despite the fact that it may result in vehicle roll away. …”

Numerical simulation of drying process within a novel rotary drying machine for palm oil sludge. by Khairi, Ahmad Adzlan Fadzli, Yassin, Abdullah, Abang Kamaruddin, Abang Mohammad Nizam, Mat Ali, Mohamed Sukri, Maruai, Nurshafinaz

“…This study investigated how to model a centre-offset annular rotary drum using OpenFOAM and the meshing software GMSH. …”
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Biocomposting process for utilization agro-industrial wastes by A. N, Kabbashi, Z. A, MD., Othan, Ahmadi

“…From the study it is found that horizontal rotary drum bioreactor was the most suitable to run this study. …”
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The experimental studies of the automatic control methods of magnetic separators performance by magnetic product by Jamil Alsayaydeh, Jamil Abedalrahim, Indra, Win Adiyansyah, Wong, Adam Yoon Khang, Hossain, A. K. M. Zakir, Shkarupylo, Vadym, Pusppanathan, J.

“…The theoretical formulas that describe the formation of a pulsed magnetic field in a magnetic separation zone are presented and the magnetic induction of this field is based on the physical variables that characterize the operating system of the damp magnetic drum class. The theoretical reliance of the magnetic induction of the magnetic field in the working zone on the amount of magnetite in the concentrate layer on the surface of the separator drum is determined. …”

Production of fermentable sugarsfrom oil palm trunk by aspergillus fumigatus in solid state fermentation by Md. Salleh, Madihah, Yahya, Adibah, Hussin, Huszalina, Mohamad, Shaza Eva, Jamaludin, Zulkeflizan

“…In the study, OPT without chemical pre-treatment was utilized for optimization of fermentable sugar production in SSF using flask and 5L rotary drum bioreactor. Aspergillus fumigatus SK1 produce 24.40 mg/g fermentable sugar under limited nitrogen content. …”

Optimization of elecrospinning of PVDF scaffolds fabrication using response surface method by Nallappan, Madana Leela, Nasef, Mohamad Mahmoud

“…The factors considered for experimental design were the applied electric voltage, the PVDF solution concentration, and the distance between the needle tip and the collecting drum. The Central Composite Design (CCD) was used to generate the experimental design whilst the analysis of variance (ANOVA) was performed to obtain statistical validation of regression models and to study the interaction between input parameters. …”
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Modul program pembangunan sukan dan riadah by Hushin , Hassan, Misren, Mohd. Aidil

“…Modul ini dibina mengikut Model Drum (1981) yang memberi penekanan kepada tiga unsur untuk membangunkan program yang berkualiti. …”
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Experimental investigation of low speed disc brake judder vibration by Ishak, Mohd Razmi, Abu Bakar, Abd. Rahim, Shamsudin, Subki, Maskak, Muhammad Husaini, Abdul Hamid, Mohd Kameil

“…Brake judder is defined as disc or drum deformation-induced vibration which typically occurs at frequency less than 200 Hz. …”