This paper presents an improved version of a wireless device embedded with a smart PZT sensor to
detect flaws and structural defects on selected investigated structure. Smart PZT sensors were used as an
actuator and sensor, coupled with two XBee’s and one signal generator IC chip. Programme execution on
transmitting and receiving the ultrasonic guided wave via the PZT sensor had been written in MATLAB.
The developed source code is basically to receive serial data from one Xbee to another remote Xbee attached
to the investigated structural system. The refined waveform response is utilised for prognosis of the true
structural status. The 4-mm simulated holed into one of the aluminium structural plate is benchmarked
with its pristine condition in validating the effectiveness of the developed SHM wireless module. Results
showed that the wave is more even in non-defected area and disrupted in affected area. Ultrasonic waves
increase continuously for non-destructive evaluation and structural health monitoring in various structural
applications because the guided wave can propagate long distances and reach difficult-to-access regions;
for inspecting porous and some non-porous materials ultrasonic waves attenuate fast and are very useful.
Recent advances in ultrasonic wave application model and results are discussed in this paper.
Composite structures and materials are used in aerospace, marine and automotive applications due
to their light weight characteristics. By using rice husk ash (RHA) as natural binder to replace epoxy
resin, it improves the characteristic of the composite laminated structure. Rice husk has become an
important ingredient in silica, silicon carbide, and silicon nitride because of its high a silicon content.
This paper evaluates the performance of laminated composite plate in a drop-weight impact testing. Two
plates are attached to the test rig in the particular desired impact orientation. The main advantages of
this process are the plates provide more realistic drop-weight impact and data. Data from the impact test
was collected and analysed to evaluate the material properties of epoxy resin and RHA. Results show
RHA’s energy absorption is better and it has more deformation to prevent structure failures compared
with epoxy resin. This paper aims to evaluate the application of RHA as a geopolymer binder and flax
fibre as an alternative material to glass fibre in the composites industry.
Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD) analysis were performed in this work in order to obtain the best design for safety and aerodynamic performance of the bicycle cycling helmet. FEA analysis was computed on two different helmet designs to determine the critical area subjected to impact. A pressure load was applied on the helmets’ outer surface to simulate oblique loading. The critical areas of the helmets were then highlighted and identified, enabling design improvements to be made on both designs. CFD analysis was then executed in order to obtain the lowest drag coefficient number in reducing the air resistance induced by both of the helmet designs, inherently increasing cyclist performance and ensuring competition success.