Faculty

Award

By

Dr. N S Shanmuka

Best Faculty award

Cognizant,2017

Dr H N Narasimhamurthy

Best faculty award

Cognizant

Dr. M Krishna

Young Researcher award

Cognizant

Dr. Bharatish A

Young scientist Award

VGST,2013.

Dr. S Mahendra Kumar

Young scientist Award

VGST,2012

Prof. R Chandrakumar

Best students project award,

KSCST,2014

Product Development in last three years by Faculty

SI. No.

Product Name

Description

1

Film Stretching Unit

The custom-designed stretching unit (Figure 1) has two roller sets with individual and identical heating elements. Thus, the temperature of the roller sets can be controlled individually. The heating elements run through full length of the roller and hence, uniform temperature can be maintained in each roller set. A Proportional Integral Derivative (PID) controller maintains the set temperature. Identical motors (high torque DC motor, 24 V, 100 W) are used for roller set 1 and set 2. Roller set 2 can be used for supporting and pulling the film. Speeds of the two roller sets are adjustable by operating knob-1 and knob-2 in the range 5–60 rpm. PVDF films were stretched by setting both the rollers to 5rpm. The speeds are closely controlled by employing a universal transformer with a 4700mF capacitive filter, which absorbs the voltage fluctuations. Pressure on the film is due to the spring force. Screws are used to compress the spring. Stretch ratio corresponding to maximum b-phase for the thin film under study was obtained from studies elsewhere and the effect of strain rate on the proportion of β-phase was studied.

Figure 1. Stretching unit with PID controller.

Faculty incharge: Dr Roopa TS and Dr Gangadhar Angadi

2

ECDM

Custom

Engineered

Electrochemical

Discharge

Machining

Experimental

Set-up

Applications of borosilicate glass are gaining importance in biomedical devices, microfluidics, lab-on-chip devices, and microelectromechanical devices (MEMS) due to the main characteristics such as optical transference, chemical inertness, and low thermal expansion coefficient. However, developing microstructures on glass has imposed challenges due to its low machinability. Although, glass micro structuring can be done using laser beam machining (LBM), ultrasonic machining (USM) and deep reactive-ion etching (DRIE), they suffered from the problems like higher heat affected zone (HAZ), residual stresses and slow machining rates respectively. Micro structuring on hard, brittle, and wear resistant materials can be achieved with electrochemical discharge machining (ECDM) process, which is relatively low cost and less complex, compared to LBM, USM, and DRIE. A qualitative comparison on glass micro-hole drilling using mechanical, thermal, chemical and hybrid machining methods, indicated that the aspect ratios of SACE (ECDM) a hybrid machining method and its variants ranges from 0.55 to 11 with diameter range 40–600 µm and depth 200–1,200 µm, comparable with DRIE, LASER and USM. In addition, the equipment cost and complexity of SACE is relatively low. To machine high strength, high melting point non-conducting engineering materials initially an in house ECDM experimental set-up was developed as shown in Fig. 1. Later a Custom Engineered ECDM Experimental Set-up was developed as shown in Fig. 2.