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Browsing by Author "Dackermann Ulrike"

Now showing items 1-15 of 15

Amplitude Frequency Characteristics of 'Smart'-Pin Frame System

Widjaja Joko; Li Jianchun; Samali Bijan; Dackermann Ulrike; Brown Peter (Institute of Noise and Vibration, University of Technology Malaysia, 2005)

The use of adjustable Amplitude Frequency Characteristics (AFC) approach is a new concept in vibration mitigation, which is developed from frequency detuning technique used in vibration protection against resonance. This ...
Damage Identification based on MOdal Strain Energy utilising Nerual Network Ensembles

Dackermann Ulrike; Samali Bijan (The Meeting Planners, 2008)
Damage Identification in Timber Bridges Utilising the Damage Index Method and Neural Network Ensembles

Dackermann Ulrike; Li Jianchun; Samali Bijan (Engineers Australia, 2009)

Many of Australia's timber bridges are in aged and decayed conditions. In order to ensure the reliability of these structures and the safety of the public, condition assessment, damage detection and safety evaluation is ...
Damage Identification of Timber Bridge Using Vibration Based Methods

Li Jianchun; Samali Bijan; Choi Fook Choon; Dackermann Ulrike (Institute of Noise and Vibration, University of Technology Malaysia, 2005)

In recent years, a great deal of attention has been paid to the declining state of the aging infrastructure around the world including Australia. The ability to detect damage at their early stage can reduce the costs and ...
Damage Identification on a Numerical Two-Storey Framed Structure using Ambient Vibration Response Analysis and Artificial Neural Networks

Dackermann Ulrike; Li Jianchun; Samali Bijan (The Hong Kong Polytechnic University, 2011)

This paper presents a damage identification method based on ambient floor vibration measurements in multi-storey buildings. The proposed method uses ambient response vibration data to fannulate a damage index based on ...
Damage Severity Assessment of Timber Bridges using Frequency Response Functions (FRFs) and Artificial Neural Networks (ANNs)

Dackermann Ulrike; Li Jianchun; Samali Bijan; Choi Fook Choon; Crews Keith (Laboratorio Nacional de Engenharia Civil, 2011)

This paper presents a novel vibration-based technique that utilises changes in frequency response functions (FRFs) to assess advancement of damage in timber bridges. In the proposed method, damage patterns embedded in FRF ...
Data-Driven Modelling Of Low-Pressure Hybrid Membrane Filtration Using Multivariate Polynomial Regression

Erdei Laszlo; Dackermann Ulrike; Ball James (Chemical Industry Press, 2010)

Hybrid membrane filtration processes involve complex physical, chemical, and biological phenomena, thus their mechanistic modelling is overly challenging. In this study we use multivariate polynomials to model the fouling ...
Determinations of Stress Wave Velocity in a Timber Pole using Wavelet Transform

Subhani Md. Mahbube; Li Jianchun; Samali Bijan; Dackermann Ulrike (The Hong Kong Polytechnic University, 2011)

This paper presents an application of Wavelet Transform (WT) for determination of stress wave velocity for Non-destructive Testing of timber utility poles in service. For surface Non-destructive Testing (NDT), the hammer ...
Dynamic-Based Damage Identification Using Neural Network Ensembles and Damage Index Method

Dackermann Ulrike; Li Jianchun; Samali Bijan (Multi Science Publishing, 2010)

This paper presents a vibration-based damage identification method that utilises a â¿¿damage fingerprintâ¿ of a structure in combination with Principal Component Analysis (PCA) and neural network techniques to identify ...
Experimental Modal Analysis of U-Shaped Adobe-Mudbrick Wall Units

Samali Bijan; Li Jianchun; Dowling Dominic; Dackermann Ulrike (Australian Earthquake Engineering Society, 2005)

Millions of people around the world live in traditional adobe-mudbrick houses which are at significant risk of damage and collapse due to earthquakes. To improve the earthquake resistance of traditional adobe-mudbrick ...
Experimental Verification of A Vibration-Based Damage Identification Method In A Timber Structure Utilising Neural Network Ensembles

Dackermann Ulrike; Li Jianchun; Samali Bijan; Choi Fook Choon; Crews Keith (RILEM Publications, 2008)
Identification of added mass on a two-storey framed structure utilising FRFs and ANNs

Dackermann Ulrike; Li Jianchun; Samali Bijan (CRC Press/Balkema, 2011)

This paper presents a vibration~based damage detection method that utilises frequency response functions (FRFs) to identify added mass on a two-storey framed structure. Added mass is used to simulate frequency changes due ...
Investigation on the Dynamic Response of a Damaged Bridge

Samali Bijan; Li Jianchun; Choi Fook Choon; Brown Peter; Dackermann Ulrike (Institute of Noise and Vibration, University of Technology Malaysia, 2005)

In this study, an experimental investigation was conducted on the changes to structural dynamic behaviour due to loss of section of a laboratory timber bridge. The fabricated timber bridge initially served as a benchmark ...
Structural damage identification utilising PCA-compressed frequency response functons and neural network ensembles

Dackermann Ulrike; Li Jianchun; Samali Bijan (CRC Press, Taylor & Francis Group, 2008)
Vibration-Based Damage Detection for Timber Structures in Australia

Samali Bijan; Li Jianchun; Dackermann Ulrike; Choi Fook Choon (Nova Science Publishers, 2011)

The use of non-destructive assessment techniques for evaluating structural conditions of aging infrastructure, such as timber bridges, utility poles and buildings, for the past 20 years has faced increasing challenges as ...

Now showing items 1-15 of 15

Browsing by Author "Dackermann Ulrike"

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Browsing by Author "Dackermann Ulrike"