2009-2012

For questions on any specific Project or publication, feel free to contact me, and I will respond as soon as possible.

During My Faculty Period in India

2009-10

Title: Piezoelectric sensors especially for Wooden applications

Summary: In countries like USA or Japan it is not so uncommon to have wooden structures in their homes. However, metals and its alloys are the most widely used engineering materials in construction of any military or civil structure. Revisiting natural disasters like the recent Haiti earthquake (12 Jan 2010) or Katrina (cyclones) reminds the necessity to have better housing infrastructure with robust monitoring systems. Traditionally wood is accepted as excellent rehabilitation material, after any disaster. The recycling materials extracted from in-organic, biodegradable wastes, also can be used for rehabilitation. The key issue which dampens the life of these rehabilitated structure including green materials (like wood) is unnecessary deposits (nails, screws, bolts etc)/damages due to insect attack. Thus, a few health monitoring techniques have emerged in the recent past. Electromechanical Impedance technique is one such technique, which is simple but robust to detect variations in the integrity of structures. In this paper, impedance based piezoceramic sensor was bonded on wooden sample, which was used to study changes due to metallic (steel nails) deposits at various locations. A study of weight deposits on aluminum plate was used for comparisons.

Articles:

Annamdas V. G. M and Annamdas K. K. K (2010) “Impedance based sensor technology to monitor stiffness of biological structures”, SPIE Defense, Security, and Sensing, April 2010, Orlando, FL, USA, Paper no: 7673-32

Annamdas K. K. K and Annamdas V. G. M (2010) “Piezo Impedance sensors to monitor degradation of biological structure,SPIE Defense, Security, and Sensing, April 2010, Orlando, FL, USA, Paper no:7673-28

Annamdas K. K. K and Annamdas V. G. M (2010) “Review on Developments in Fiber Optical Sensors and Applications”, SPIE Defense, Security, and Sensing, April 2010, Orlando, FL, USA, Paper no. 7677-26

(Links to all SPIE articles)

YOUNG SCIENTIST RESEARCH GRANT by Department of Science & Technology, New Delhi, India WAS AWARDED: To carry forward my research in india. But I didn't get physical lab space or suitable position by any Indian organizations or institutes of excellence. HOWEVER SINGAPORE'S NTU called me back to continue my scientific research.

2010-12

Project Proposals: Integrating Hydro, Neural Networks, and Piezo Impedance Technologies

These proposals leverage insights from recent research on (1) water resource management, (2) structural health monitoring, and (3) advanced sensing techniques to address critical challenges in civil engineering and environmental sustainability.

First Project Summary: The four articles, presented at the 2011 IPWE conference in Singapore, collectively offer a comprehensive overview of critical water resource issues. "A Review on Inter Basin Transfer of Water" by Boddu, Gaayam, and Annamdas (2011) examines the complexities and implications of moving water between different river basins. Complementing this, "Effects of Climate Change on Environmental and Water Resources: A Review" by Vinnakota, Kavuri, and Annamdas (2011) explores the profound impacts of climate change on both environmental systems and water availability.

Further addressing fundamental needs, Gaayam, Vinnakota, and Annamdas (2011) provide "Water Supply and Sanitation: An Overview," highlighting essential considerations for providing clean water and effective sanitation. Finally, Kavuri, Boddu, and Annamdas (2011) review "New Methods of Artificial Recharge of Aquifers," focusing on innovative techniques to replenish underground water sources. Together, these papers from the same conference demonstrate a concerted effort to review and understand diverse challenges and potential solutions in global water resource management.

1 Boddu M, Gaayam T and Annamdas V. G. M (2011) “A Review on Inter BasinTransfer of Water” IPWE 2011, Proceedings of 4th International Perspectiveon Water Resources & the Environment, ASCE Conf, January 4-6, 2011, NationalUniversity of Singapore (NUS), Singapore. [January 4, Time:13.30-13.50]Session on : Interbasin Transfer of Water

2 Vinnakota S S, Kavuri M and Annamdas V. G. M (2011) “Effects of ClimateChange on Environmental and Water Resources: A Review” IPWE 2011,Proceedings of 4th International Perspective on Water Resources & the Environment, January 4-6, 2011, ASCE Conf, National University of Singapore (NUS),Singapore. [January 6, Time:1430 – 1450], session on :Effects of ClimateChange on Environmental and Water Resource

3 Gaayam T, Vinnakota S S and Annamdas V. G. M (2011) “Water Supply andSanitation: An Overview” IPWE 2011, Proceedings of 4th InternationalPerspective on Water Resources & the Environment, January 4-6, 2011, ASCE Conf, National University of Singapore (NUS), Singapore. Poster on : Water Supplyand Sanitation, No: 1c

4 Kavuri M, Boddu M and Annamdas V. G. M (2011) “New Methods of ArtificialRecharge of Aquifers: A Review” IPWE 2011, Proceedings of 4thInternational Perspective on Water Resources & the Environment, January4-6, 2011, ASCE Conf, National University of Singapore (NUS), Singapore. Poster on:Artificial Recharge of Aquifer, No: 1j

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Second Project Summary: The next two papers, presented at separate conferences in 2012, focus on the application of piezoelectric sensors for structural health monitoring.

"Application of three dimensional electromechanical impedance model for damage assessment of plate" by Annamdas, Yang, and Park, presented at the SPIE symposium in Adelaide, Australia, in March 2012, delves into the use of a sophisticated three-dimensional electromechanical impedance model. This research specifically aims to assess damage in plate structures, showcasing an advanced theoretical approach to structural integrity.

In October 2012, at the International Conference on Advances in Design and Construction of Structures in Bangalore, India, Duggal, Annamdas, and Verma presented "Application of Neural Networks for Piezoelectric Sensor based Strength Monitoring of concrete cube." This work explores a practical application, utilizing neural networks in conjunction with piezoelectric sensors to monitor the strength of concrete cubes, highlighting a data-driven approach to material health assessment.

Together, these articles demonstrate diverse applications of piezoelectric technology, from theoretical modeling for damage detection in plates to practical strength monitoring in concrete using artificial intelligence.

1 Annamdas V. G .M , Yang Y and Park S. (2012) "Application of three dimensional electromechanical impedance model for damage assessment of plate", SPIE symposium, Adelaide, Australia, 11-15 March 2012. Proc. of SPIE Vol. 8345, 83451Z (Paper 8345-67)

2 Duggal G, Annamdas V. G , and Verma S. (2012) "Application of Neural Networks for Piezoelectric Sensor based Strength Monitoring of concrete cube", International Conference on Advances in Design and Construction of Structures , Oct 19-20, 2012 in Bangalore, India.(Paper 518), DOI:02.ADCS.2012.1.518, Page no: 47-50, ISBN :978-94-91587-02-3,ADCS 2012

Third Project Summary: It is my work on SHM, that was rewarded with young scientist Research Grant.

Details:

Recognition: Young Scientist Research Grant (2011)

I am pleased to share that my fast-track young scientist proposal, "Evaluation of Piezo Sensors for effective use in Health Monitoring of Engineering Structures," was recommended for support under the Science & Engineering Research Board (SERB) Fast Track Scheme for Young Scientists in Engineering Sciences by the Department of Science and Technology (DST), Government of India.

This significant recognition, received on November 21, 2011, provided me with a research grant for a period of 2 or 3 years (as proposed in my submission). The project was recommended without additional manpower support. This opportunity allowed me to further my research in the critical area of structural health monitoring using advanced piezoelectric sensor technology.