Tribikram Kundu, Arizona State University, Non-destructive Testing and Structural Health Monitoring Technology - Recent Developments
16-17 settembre 2024
This course will cover the research and development work carried out by Tribikram Kundu (instructor) in
collaboration with his graduate students and international colleagues over the last three decades on structural
health monitoring (SHM) and non-destructive evaluation (NDE) technology. In particular, it will focus on acoustic
source localization (ASL) and damage detection techniques using linear and nonlinear ultrasonic signals. Both
linear and nonlinear ultrasonic techniques are needed for inspecting materials and structures at different scales -
from microscopic fatigue cracks and dislocations to large scale cracks in civil infrastructures made of metal,
composite or concrete. For linear ultrasonic inspections the advantages of guided-wave-based techniques over
body-wave-based techniques will be demonstrated. Then the nonlinear ultrasonic techniques will be introduced.
The nonlinear ultrasonic methodology developed by the instructor, called Sideband Peak Count – Index (or SPCI)
technique will be taught. Advantages of this technique over conventional linear and nonlinear ultrasonic
techniques such as ultrasonic pulse velocity and attenuation measurements and higher harmonic generation
techniques will be demonstrated. A new ASL technique that does not require the knowledge of the material
properties for localizing the acoustic source will be also taught. The mathematical derivation behind this Lshaped
sensor cluster-based technique will be presented. In addition to the experimental investigation, the meshfree
modelling technique called distributed point source method (DPSM) developed jointly by the instructor and
his colleague Prof. D. Placko of ENS, Cachan, France for solving elastic and electromagnetic wave propagation
problems will be also discussed. Advantages of all these newly developed techniques - DPSM, SPC-I, L-shaped
sensor cluster based ASL technique, and guided wave based linear ultrasonic techniques for nondestructive
evaluation and structural health monitoring will be covered in this course.
|
Santos Kiwele, USM, Tanzania, AN OVERVIEW OF POWER SYSTEM IN EAST AFRICA AND TANZANIA: ISSUES AND PERSPECTIVES OF DEVELOPMENT
2023
|
Santos Kiwele, USM, Tanzania, RURAL ELECTRIFICATION IN TANZANIA WITH THE ILICETO SHIELD WIRE SCHEME (ISWS)
|
Workshop on Supercapacitors and Energy Storage
27-28 May 2020
Workshop on Supercapacitors and Energy Storage gratuito per gli studenti e non lontano da Roma
Tuscia University, Viterbo
27-28 May 2020
|
Towards “Lighting 4.0” era: from the LED technological revolution to the “Sustainable Smart Lighting” concept
14-15 Gennaio 2025
During the last decade, SSLs-Solid-State Lighting based on components like LEDs, OLEDs and LDs, challenges conventional technologies. LED has turned into a game changer beating conventional technologies in all aspects. Today, SSLs proceed to replacing of all legacy technologies: a revolution in the lighting market. Artificial light production absorbs around 2 900 TWh corresponding to 13,7% of the world’s electricity annual production. The massive adoption of LED technology during the next years can contribute to harness electricity use for lighting, up to 4% by 2030. As LED technology matures, maximizing the energy savings from connected SSL systems will become increasingly dependent on successful integration into the built environment. Today, we are witnessing a transition from the conventional “analogue” lighting technologies to “digital” lighting. Intelligent lighting will become the backbone for smart homes and smart cities. Industry has coined a new term “integrative lighting” to draw renewed attention to its primary effort to be successful in meeting society’s needs. However, “rebound effect”, known also as “Jevons paradox”, can blur this march forward. One potential solution to avoid that negative effect consists in switching to smart integrative lighting driven by both “application efficiency” and quality of light. This technological revolution shall comply with the SSL2 concept, which consists of sustainable smart lighting systems based on solid-state lighting devices, might stop that harmful effect. Smart, and affordable integrative lighting that incorporates light quality is driven by “appliance efficiency.” This merely suggests that the “Right Light” should be provided by next-generation lighting systems with the best levels of quality and efficiency when and where it is needed.
|
Towards “Lighting 4.0” era: from the LED technological revolution to the “Sustainable Smart Lighting” concept
During the last decade, SSLs-Solid-State Lighting based on components like LEDs, OLEDs and LDs, challenges conventional technologies. LED has turned into a game changer beating conventional technologies in all aspects. Today, SSLs proceed to replacing of all legacy technologies: a revolution in the lighting market. Artificial light production absorbs around 2 900 TWh corresponding to 13,7% of the world’s electricity annual production. The massive adoption of LED technology during the next years can contribute to harness electricity use for lighting, up to 4% by 2030. As LED technology matures, maximizing the energy savings from connected SSL systems will become increasingly dependent on successful integration into the built environment. Today, we are witnessing a transition from the conventional “analogue” lighting technologies to “digital” lighting. Intelligent lighting will become the backbone for smart homes and smart cities. Industry has coined a new term “integrative lighting” to draw renewed attention to its primary effort to be successful in meeting society’s needs. However, “rebound effect”, known also as “Jevons paradox”, can blur this march forward. One potential solution to avoid that negative effect consists in switching to smart integrative lighting driven by both “application efficiency” and quality of light. This technological revolution shall comply with the SSL2 concept, which consists of sustainable smart lighting systems based on solid-state lighting devices, might stop that harmful effect. Smart, and affordable integrative lighting that incorporates light quality is driven by “appliance efficiency.” This merely suggests that the “Right Light” should be provided by next-generation lighting systems with the best levels of quality and efficiency when and where it is needed.
|