The role of dynamic response parameters in damage prediction

Zai, Behzad Ahmed; Khan, Muhammad Atif; Khan, Kamran A.; Mansoor, Asif; Shah, Aqueel; Shahzad, Majid

doi:10.1177/0954406219841083

Cited by 23 publications

(17 citation statements)

References 130 publications

(167 reference statements)

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“…Their practice was mainly based on the response of different sensors and visual inspections using enhanced realistic deterioration models. Similar research overview is also presented in our recently submitted review paper [41].…”

Section: Introductionmentioning

confidence: 54%

A novel approach for damage quantification using the dynamic response of a metallic beam under thermo-mechanical loads

Zai

Khan

et al. 2020

Journal of Sound and Vibration

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This paper investigates the interdependencies of crack depth and crack location on the dynamic response of a cantilever beam under thermo-mechanical loads. Temperature can influence the stiffness of the structure, thus, the change in stiffness can lead to variation in frequency, damping and amplitude response. These variations are used as key parameters to quantify damage of Aluminum 2024 specimen under thermo-mechanical loads. Experiments are performed on cantilever beams at non-heating (room temperature) and elevated temperature, i.e., 50°C, 100°C, 150°C and 200°C. This study considers a cantilever beam having various initially seeded crack depth and locations. The analytical, numerical and experimental results for all configurations are found in good agreement. Dynamic response formulation is presented experimentally on beam for the first time under thermo-mechanical loads. Using available experimental data, a novel tool is formulated for in-situ damage assessment in the metallic structures. This tool can quantify and locate damage using the dynamic response and temperature including the diagnosis of subsurface cracking. The obtained results demonstrate the possibility to diagnose the crack growth at any instant within the operational condition under thermo-mechanical loads.

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Section: Introductionmentioning

confidence: 54%

A novel approach for damage quantification using the dynamic response of a metallic beam under thermo-mechanical loads

Zai

Khan

et al. 2020

Journal of Sound and Vibration

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“…In this paper, an effort was made mainly to develop the required mathematical relation between the structural behavior and crack resistance of the ABS beam structure if operated under dynamic load conditions coupled with relatively high-temperature values. Detecting damages by using the dynamic response of the structure is a very effective non-destructive testing technique [24,25]. Due to this reason, the structural dynamic response was used to investigate crack growth, quantification, and location of the mentioned ABS beam.…”

Section: Introductionmentioning

confidence: 99%

In-Situ Dynamic Response Measurement for Damage Quantification of 3D Printed ABS Cantilever Beam under Thermomechanical Load

Baqasah

Zai

et al. 2019

Polymers

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Acrylonitrile butadiene styrene (ABS) offers good mechanical properties and is effective in use to make polymeric structures for industrial applications. It is one of the most common raw material used for printing structures with fused deposition modeling (FDM). However, most of its properties and behavior are known under quasi-static loading conditions. These are suitable to design ABS structures for applications that are operated under static or dead loads. Still, comprehensive research is required to determine the properties and behavior of ABS structures under dynamic loads, especially in the presence of temperature more than the ambient. The presented research was an effort mainly to provide any evidence about the structural behavior and damage resistance of ABS material if operated under dynamic load conditions coupled with relatively high-temperature values. A non-prismatic fixed-free cantilever ABS beam was used in this study. The beam specimens were manufactured with a 3D printer based on FDM. A total of 190 specimens were tested with a combination of different temperatures, initial seeded damage or crack, and crack location values. The structural dynamic response, crack propagation, crack depth quantification, and their changes due to applied temperature were investigated by using analytical, numerical, and experimental approaches. In experiments, a combination of the modal exciter and heat mats was used to apply the dynamic loads on the beam structure with different temperature values. The response measurement and crack propagation behavior were monitored with the instrumentation, including a 200× microscope, accelerometer, and a laser vibrometer. The obtained findings could be used as an in-situ damage assessment tool to predict crack depth in an ABS beam as a function of dynamic response and applied temperature.

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“…It is important for Engineering, e.g., Civil, Mechanical, and Structural, curricula to be up-to-date and improved, to include a greater focus on building the capacity to adapt to a changing global environment [ 114 ]. Products offer a major potential for more sustainable buildings in the future.…”

Section: Potential Impacts Of Smart Self-healing 3d Printed Structmentioning

confidence: 99%

Self-Healing Mechanisms for 3D-Printed Polymeric Structures: From Lab to Reality

et al. 2020

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Existing self-healing mechanisms are still very far from full-scale implementation, and most published work has only demonstrated damage cure at the laboratory level. Their rheological nature makes the mechanisms for damage cure difficult to implement, as the component or structure is expected to continue performing its function. In most cases, a molecular bond level chemical reaction is required for complete healing with external stimulations such as heating, light and temperature change. Such requirements of external stimulations and reactions make the existing self-healing mechanism almost impossible to implement in 3D printed products, particularly in critical applications. In this paper, a conceptual description of the self-healing phenomenon in polymeric structures is provided. This is followed by how the concept of self-healing is motivated by the observation of nature. Next, the requirements of self-healing in modern polymeric structures and components are described. The existing self-healing mechanisms for 3D printed polymeric structures are also detailed, with a special emphasis on their working principles and advantages of the self-healing mechanism. A critical discussion on the challenges and limitations in the existing working principles is provided at the end. A novel self-healing idea is also proposed. Its ability to address current challenges is assessed in the conclusions.

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The role of dynamic response parameters in damage prediction

Cited by 23 publications

References 130 publications

A novel approach for damage quantification using the dynamic response of a metallic beam under thermo-mechanical loads

A novel approach for damage quantification using the dynamic response of a metallic beam under thermo-mechanical loads

In-Situ Dynamic Response Measurement for Damage Quantification of 3D Printed ABS Cantilever Beam under Thermomechanical Load

Self-Healing Mechanisms for 3D-Printed Polymeric Structures: From Lab to Reality

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