Piezo impedance sensors to monitor degradation of biological structure

Kiran Kishore Kumar Annamdas; Venu Gopal Madhav Annamdas

doi:10.1117/12.849858

24 April 2010 Piezo impedance sensors to monitor degradation of biological structure

Kiran Kishore Kumar Annamdas, Venu Gopal Madhav Annamdas

Proceedings Volume 7673, Advanced Environmental, Chemical, and Biological Sensing Technologies VII; 76730S (2010) https://doi.org/10.1117/12.849858
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

In some countries it is common to have wooden structures in their homes, especially Japan. However, metals and its alloys are the most widely used engineering materials in construction of any military or civil structure. Re-visiting 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 (green material) was accepted as excellent rehabilitation material, after any disaster. In recent times, the recycling materials extracted from inorganic, biodegradable wastes are converted into blocks or sheets, and are also used to assist public in rehabilitation camps. The key issue which decreases the life of these rehabilitated structure including green materials (like wood) is unnecessary degradation or deterioration over time due to insect or acid attack or rain/ice fall. The recycling material also needs monitoring to protect them against acid or rain/ice attacks. 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 subjected to degradation in presence of acids. Variations in mass of plank are studied.

Citation Download Citation

Kiran Kishore Kumar Annamdas and Venu Gopal Madhav Annamdas "Piezo impedance sensors to monitor degradation of biological structure", Proc. SPIE 7673, Advanced Environmental, Chemical, and Biological Sensing Technologies VII, 76730S (24 April 2010); https://doi.org/10.1117/12.849858

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