Transferring of patients using hospital bed is inefficient; it requires at least 2 people. We propose the incorporation of motors to the bed's drivetrain system to make the mobility easier for nurses/caregivers.

Subtopics:

• Development of motorized hospital bed with swerve-drive modules

• Development of the human machine interface

Publications:

1. Dhelika, R., et al. (2021). Development of a Motorized Hospital Bed with Swerve Drive Modules for Holonomic Mobility. Applied Sciences, 11(23), 11356.

2. Girindra, F. G., Budiono, H. D. S., & Dhelika, R. (2023). Evaluation of Assembly Time of Motorized Wheel Module for Hospital Bed using Boothroyd-Dewhurst Method. Journal of Advanced Research in Applied Mechanics, 108(1), 27-46.

We propose an efficient mechanism to sort plastic waste in an input waste stream to improve the recycling rate.

Subtopics:

• Image-based plastic waste separator using CNN (Convolutional Neural Network)

• Design of diverting arm for separating plastic bottle waste on a conveyor belt

• Efficient separation of flake plastic waste on a conveyor belt

Publications:

1. Qibthiyah, M., & Dhelika, R. (2023, December). Resin-Based Classification of Plastic Bottles Waste using CNN Architectures. In 2023 IEEE 8th International Conference on Recent Advances and Innovations in Engineering (ICRAIE) (pp. 1-6). IEEE.

An eddy current separator (ECS) is a machine that uses a magnetic field to separate waste of non-ferrous metals, such as copper and aluminium. We propose re-design of the ECS for an improved efficiency and the use of it for other application.

Subtopics:

• Development of two-stage ECS

• ECS for separation of multilayer plastic

Publications:

1. Assidiqqi, M. K. I., & Dhelika, R. (2024). Design of a Rotary-Based Feeding System for Improving the Performance of Eddy Current Separator. Evergreen, 11(1), 493-500.

Subtopics:

• Mechanical disassembly of waste PCB

• Shape-based separation electronic components with vibration

We develop a lab-scale cleaner machine to separate paddy grain from empty grain and low-density impurities. The machine enables the quality assessment of harvested paddy by measuring parameters such as cleanliness and yield loss rate.

Publications:

1. Marulloh, Dhelika, R. (2023). Design and Development of Laboratory-Scale Cleaner for Paddy Grain with Magnetic and Pneumatic Separation. Journal of Advanced Research in Applied Mechanics, 108(1), 66-81.

Ablution (wudhu) often leads to significant water wastage due to the inefficient discharge of water from conventional faucets. To address this issue, we have developed an infrared sensor-based water tap adapter. This adapter is low-cost, easy to install and requires low maintenance. By incorporating this technology, water consumption during ablution can be reduced by up to 63%.

Publications:

1. Susanto, B.A., Dhelika, R. Design and Implementation of Automatic Wudu Faucet Using PCB in a Real Environment (submitted)

Gasification is a process that converts biomass into gases that can be used for sources of renewable energy. However, the process is complicated. We implement a control and monitoring system of all motors/actuators to optimize the output of the gasifier.

Publications:

1. Kurnianto, I.R., Setiawan, A.G., Surjosatyo, A., Dafiqurrohman, H. & Dhelika, R., Design and Implementation of a Real-Time Monitoring System Based on Internet of Things in a 10-kW Downdraft Gasifier, Evergreen, 9(1), pp. 145-149, 2022.

2. Setiawan, R., Hidayat, H.F., Dafiqurrohman, H., Surjosatyo, A., Dhelika, R., Performance Evaluation of a Continuous Downdraft Gasification Reactor Driven by Electric Motors with Manual Mode of Operation, Journal of Engineering and Technological Sciences, Vol. 54 No. 4 (2022)

3. Hidayat, H. F., Setiawan, R., Dhelika, R., Surjosatyo, A., & Dafiqurrohman, H. (2022). Investigation of relative influence of process variables in a 10-kW downdraft fixed-bed gasifier with ann models. Journal of Applied Engineering Science, 20(3), 971-977.

Kopyor coconut stands out from a regular coconut due to its unique characteristics. However, traditional detection methods used by farmers often yield inaccurate results. We propose several methods for more accurate and efficient detection.

Publications:

1. Dhelika, R., Nugroho, F. A., Bayu, M., & Kamil, A. (2019). Kopyor coconut detection using sound-based Dynamic Time Warping method. Jurnal Ilmu Komputer dan Informasi, 12(1), 25-30.

2. Kamil, A., Bayu, M., Saragih, A. S., & Dhelika, R. (2018, August). Investigation of Potential Impact Parameters for Detection of Kopyor Coconut with Drop Test Method. In 2018 4th International Conference on Science and Technology (ICST) (pp. 1-6). IEEE.

We develop and evaluate a prototype of a converted e-bike featuring the proposed drivetrain of a pinion-and-pulley system.

Publications:

1. Davin, Muhammad Ilman Mughni, Kevin Dristiani Dani, A. Ebriel Lianto, and Radon Dhelika. Development of a High-Torque, Low-Cost Electric Bicycle with a Drivetrain Based on Pinion-and-Pulley System (submitted)

An electrostatic chuck (ESC) is a device used to clamp and transport flat-surfaced objects such as thin semiconductor wafers. Working by the principle of electrostatic force, its functionality is limited in handling objects with rough surfaces, as the attractive forces at work are significantly reduced. We develop ESCs with various designs which are aimed to handle objects with rough surfaces.

Publications:

1. Saito, S., Soda, F., Dhelika, R., Takahashi, K., Takarada, W., & Kikutani, T. (2012). Compliant electrostatic chuck based on hairy microstructure. Smart materials and structures, 22(1), 015019.

2. Dhelika, R., Sawai, K., Takahashi, K., Takarada, W., Kikutani, T., & Saito, S. (2013). Electrostatic chuck consisting of polymeric electrostatic inductive fibers for handling of objects with rough surfaces. Smart materials and structures, 22(9), 095010.

3. Dhelika, R., Hemthavy, P., Takahashi, K., & Saito, S. (2016). Compliant bipolar electrostatic gripper with micropillar electrodes array for manipulation at macroscale. Smart Materials and Structures, 25(5), 055037.

4. Saito, S., Kawamura, K., Dhelika, R., Hemthavy, P., Takahashi, K., Takarada, W., & Kikutani, T. (2019). Force evaluation of electrostatic gripper with arrayed fibers consisting of parallel and coaxial electrodes. Smart Materials and Structures, 28(9), 095018.