INNOVATION IN RESEARCH
Groundbreaking Research in Material Science at the University of Cassino and Southern Lazio
Introduction
The University of Cassino and Southern Lazio is proud to announce a pioneering achievement in material science. Our research team has successfully implemented the symmetric Taylor impact experiment, also known as the rod-on-rod impact experiment, in temperature conditions for the first time. This landmark test was conducted on Al2024T351 at 150°C with an impact velocity of 400 m/s, marking a significant advancement in understanding material plasticity and damage under extreme conditions.
Rod-on-rod impact experiment at 400 m/s: the flyer cylinder is at 150°C while the receiver cylinder is at 25°C. Difference in temperature results at the same strain rate in different deformed profile and damage development. These information can be used to validate constitutive models.
About the Taylor Impact Test
The Taylor impact test, named after Geoffrey Ingram Taylor, is a fundamental experimental technique used to study the behavior of materials under high strain rates. Traditionally, this test involves a cylindrical rod impacting a rigid target, allowing researchers to observe the resulting deformation and derive valuable insights into the material's properties under dynamic loading conditions. This test was initially introduced to study the effect of the impact velocity on the material yield stress. Today, it is extensively used to validate numerical simulation models.
Modification: The Rod-on-Rod (ROR) Impact Experiment
Building on the principles of the Taylor impact test, our team has developed the rod-on-rod impact experiment. This modified approach involves two cylindrical rods impacting each other symmetrically, enabling a more comprehensive analysis of material behavior. In particular, the ROR avoid friction effects present in Taylor impact cylinder confifuration and allows to reach much higher pressures in the samples.
Research Objective
The primary objective of this innovative research is to provide deeper insights into the behavior of materials subjected to high strain rates and elevated temperatures. By exploring these conditions, we aim to contribute valuable knowledge to the fields of material science and engineering, potentially leading to the development of more resilient and efficient materials.
Experimental Setup
Induction Heating Device and Single-Stage Gas-Gun
Our experimental setup includes an induction heating device mounted on a single-stage gas-gun. This configuration allows the projectile sample to be heated to 150°C while the receiving cylinder remains at room temperature. This differential heating is crucial for observing the material's response under controlled high-temperature conditions.
Precise Impact Design
To ensure the accuracy and repeatability of the experiment, the impact distance was meticulously designed to prevent any interference from the propellant gas. This design ensures perfect alignment during the impact, a critical factor for obtaining reliable and consistent results.
High-Velocity Impact
The experiment was conducted at an impact velocity of 400 m/s. This high-velocity impact simulates real-world conditions where materials are subjected to rapid and intense forces, providing a realistic assessment of material performance.
Key Findings
Our initial results indicate significant insights into the plasticity and damage mechanisms of Al2024T351 under high strain rates and elevated temperatures. These findings have the potential to inform the development of new materials and enhance existing ones, particularly in industries where materials are subjected to extreme conditions, such as aerospace, automotive, and defense.
Future Research
This successful implementation opens the door for further research into various materials and conditions. Our team is committed to continuing this line of investigation, with plans to explore additional materials and varying temperatures and impact velocities.
Conclusion
The University of Cassino and Southern Lazio remains at the forefront of material science research. Our recent achievement in implementing the symmetric Taylor impact experiment under high-temperature conditions is a testament to our commitment to advancing knowledge and innovation in this field. We look forward to sharing more detailed findings and collaborating with industry professionals and researchers to further this important work.
Learn More
For more detailed information about our research and findings, please visit our website or contact us directly. We welcome collaboration and inquiries from researchers and industry professionals interested in this groundbreaking work.
20/05/2024