The basis of vibration-based damage detection method is that when there are changes in physical properties a structure, will also be vibration characteristics such as natural frequencies, mode shapes and damping ratios. Artificial neural network has become one the most powerful approaches capable pattern recognition, classification, nonlinear modelling employing computational intelligence techniques to tackle complex problem. In this paper, ensemble networks based identification were...

This paper presents the effects of using palm oil biomass (POB) clinker with polypropylene (PP) fibres in concrete on its compressive and flexural strength performances. Due to infrastructural development works, use construction industry has been increased. Simultaneously, it raises demand natural sand, which causes depletion resources. While considering environmental economic benefits, utilization industrial waste by-products will be alternative solution problem. Among products, one such...

This paper presented a computational fluid dynamics (CFD) simulation of air flow past 2D model NACA0012 airfoil at high Reynolds number (Re = 3.0 x 10 6 ) various angles attack (-10 to 15).The simulations were undertaken inform on how the flowed around by solving steady state governing equations continuity and momentum conservation that are combined with one three turbulence models Spalart-Allmaras, Realizable k-ε k-ω shear stress transport (SST).It is observed eliminates small separation...

An experimental work was carried out to study the influence of impressed current on residual bond strength corroded specimens. In accelerated corrosion process, two different densities 0.08 mA/cm 2 and 0.4 were used which identified as ‘slow’ ‘fast’ current. Beam end type specimens reinforced with 10 mm 16 bar diameter prepared for test. Stirrups provided along main bar. Corrosion level reinforcement limited 8% theoretical section loss. Other parameter such location test (corner centre...

Marine structures are subjected to damage and deterioration during their service life because of continuous exposures aggressive environment. As a result the performance intended functions structure affected. This paper presents development condition assessment system for assessing status concrete marine in Malaysia. The is based on Condition Index (CI) method developed by U.S Army Corps Engineers. took into account level observed inspection work. Functional (FCI) approach was used calculate...

Abstract This study presents the effect of curing conditions towards properties lightweight concrete brick made up cement, sand and some replacement materials. The materials used in this is Expanded Polystyrene (EPS) as Palm Oil Fuel Ash (POFA) cement replacement. percentage for POFA 0%, 10% 20% whilst 30% 50% EPS. samples have been exposed to different types that air water until day test. Among tests conducted are hardened density, compressive strength absorption. Based on findings, it has...

Recycled Concrete Aggregate (RCA) and Polyethylene Terephthalate (PET) are one of the construction waste can be recycled. Both them aggregate to replace natural in concrete since we know physical properties both materials hard strong. Demand for sand production has increased which led become problems industry. As a result, price increased, turn affected pricing cement bricks. One ways reduce this problem is utilize RCA PET bottle such as brick. Replacing wastes bricks practices imaginative...

Abstract Besides concrete, bricks are the most fundamental building materials used in construction of buildings, such as a partition walls. For cement-sand bricks, sand main ingredient had triggered big concern to environment impact, shortage resources and rise cost material. To address this problem, many researchers have been exploring use kenaf fiber an alternative, renewable resource for fine aggregate construction. This study is focused on cement brick that containing particles. Due its...

Forensic building is needed to examine the affected structure components assess structural integrity. This paper highlights some of studies involved on concrete structures in various types where non-destructive test (NDT) and destructive tests. The integrity can be evaluated based extent deterioration from experimental results for instance cause corrode reinforcements was due inadequate cover, whereas failure wall structures’ under design which leads collapse wall. condition floor slab that...

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation S. J. Hakim, M. Irwan, H. W. Ibrahim, Shahidan, Ayop, N. Anting, T. Chik; A hierarchical neural network for identification of multiple damage using modal parameters. AIP Conf. Proc. 21 March 2024; 2750 (1): 040067. https://doi.org/10.1063/5.0149295 Download citation file: Ris (Zotero) Reference Manager EasyBib...

The rheological complexities of non-Newtonian fluids can lead to a variety difficulties including most importantly changes in viscosity during packaging process.In order give more understanding this phenomena, the effect temperature chili sauce is investigated.This paper also presents influence three different shape nozzles flow behavior filling time.A transient simulation has been conducted work using computational fluid dynamics (CFD) ANSYS CFX 15.0.It was found that inversely proportional...

The experimental study was conducted to determine the influence of main bar corrosion on bond strength in self-compacting concrete (SCC). A total 16 tension pullout tests specimens reinforced with 10 mm and 14 diameter were used for test. properties SCC determined from slump flow, T50cm, V-funnel L box Reinforcing bars submitted impressed current accelerate bar. It found that relationship between un-corroded differed corroded set high-strength because brittleness specimens, which caused a...

Abstract This paper discusses the strength and physical properties of lightweight concrete brick before after being exposed to fire. For this study, was made up cement, sand, expanded polystyrene (EPS) palm oil fuel ash (POFA). EPS POFA are replacement materials used as sand cement respectively. The percentage varied, which 0%, 20%, 30%, 40% 50% for 10% 25% POFA. bricks were observed tested elevated temperature. Fire performance test using electronic furnace where temperature fire 300°C,...

In this new Norma, surgical mask was a thing that important to wear in public. Because of the frequent use mask, huge waste were disposed per day. The made from polypropylene fiber widely used construction term concrete fiber. Polypropylene had their own credibility provide ductile strength for reduce cracking brittle material. To study effectiveness as repaired materials material repair things or improved deteriorated concrete. Therefore, will determine can be through comparison flexural...

Abstract This research was conducted to study the initiation and propagation of surface crack width due corrosion on reinforcement in reinforced concrete structures using finite element (FE) approach. Corrosion parameters, such as attack penetration loss steel section were used define relationship with width. The objective numerical approach current is understand effects expansion behaviour pattern validate available data. output from previous works model specimens different bar diameters...

Abstract As cement is essential in producing mortar, reforms and innovations are needed to reduce the adverse effects of CO 2 future. The objectives this study were determine optimal amount kenaf powder mortar strength examine mechanical flexural properties mortar. Thirty-six cubes 50 mm x 12 number prism cast using mix ratio 1:3 with two different water-cement ratios. replacement ranging from 10% 20% matrix tested investigate parameters such as workability, density, compressive strength,...