Conducting Elevated Temperature Normal and Combined Pressure-Shear Plate Impact Experiments Via a Breech-end Sabot Heater System
August 7th, 2018
Here, we present a detailed protocol of a new approach for conducting elevated temperature reverse normal plate impact, and combined pressure-and-shear plate impact. The approach involves the use of a breech-end resistive coil heater to heat a sample held at the front-end of a heat-resistant sabot to the desired temperature.
Overview
This article presents a new protocol for conducting elevated temperature reverse normal plate impact and combined pressure-and-shear plate impact. The method utilizes a breech-end resistive coil heater to achieve the desired sample temperature.
Key Study Components
Area of Science
- Dynamic material characterization
- High temperature compressive resistance
- Shearing resistance of materials
Background
- Dynamic shearing resistance of metals is influenced by pressure and strain rates.
- Conventional methods have several sources of experimental variation.
- This technique aims to mitigate those variations.
- It can also be applied to studies of dynamic slip and spall.
Purpose of Study
- To investigate the dynamic shearing resistance of metals.
- To develop a method that reduces experimental variations.
- To explore high temperature effects on material behavior.
Methods Used
- Use of a gas gun for impact testing.
- Modification of the gas gun for specific experimental needs.
- Application of a resistive coil heater for sample heating.
- Conducting tests under controlled pressure and temperature conditions.
Main Results
- Demonstrated the feasibility of the new testing method.
- Provided insights into the dynamic shearing resistance of metals.
- Showed potential applications for studying dynamic slip and spall.
Conclusions
- The new approach offers a reliable method for material characterization.
- It addresses limitations of conventional testing methods.
- Future studies can expand on this technique for various materials.
Frequently Asked Questions
Executive Industry Relevance
This method enables dynamic material characterization under thermomechanical extremes, supporting target validation in high-temperature environments. By mitigating experimental variations in conventional plate impact approaches, it improves predictive confidence in material behavior assessments. The technique aids in de-risking mechanistic hypotheses for materials intended for extreme-condition applications.
Strategic Applications in Biopharma R&D
Early Discovery & Target Validation
- Scientific Value: Interrogates thermodynamic and mechanical hypotheses under combined pressure-shear conditions.
- Operational Value: Enables reproducible testing of material responses at elevated temperatures up to 1000°C.
Screening & Assay Development
- Scientific Value: Provides quantitative free surface velocity measurements for assessing dynamic strength.
- Operational Value: Supports assay standardization through precise thermal control and diagnostic alignment.
Translational & Preclinical Research
- Scientific Value: Facilitates mechanistic de-risking by linking microstructural evolution to macroscopic mechanical response.
- Operational Value: Enables continuity from discovery-scale testing to preclinical evaluation of material performance.
Pipeline & Workflow Integration
The method positions within early discovery for hypothesis testing, advancing to screening via standardized thermal-mechanical assays, and informing translational decisions through predictive mechanical profiling.
- Discovery Biology: Supports hypothesis testing of pressure-shear interactions in material systems.
- Screening: Delivers reproducible, quantitative outputs for comparative material evaluation.
- Analytics: Enables statistical analysis of velocity profiles to infer yield strength and plastic modulus trends.
- Translational Research: Connects thermal exposure history to mechanical performance for risk-adjusted advancement.
- Enterprise Reuse: Represents a reusable platform for thermomechanical characterization across material classes.
Operational & Enterprise Impact
- Scientific Value: Predictive confidence in high-temperature material behavior, reduction of mechanistic ambiguity.
- Operational Value: Standardization, reproducibility, and scalability of thermomechanical testing.
- Strategic Value: Improved go/no-go decisions, capital efficiency, reduced late-stage failure risk in extreme environments.
- Portfolio Impact: Risk-adjusted prioritization of materials based on thermomechanical stability.
Implementation Considerations
- Expertise in dynamic material characterization and high-temperature experimental techniques.
- Access to single-stage gas gun systems with precision machining capabilities.
- Requirement for optical diagnostics such as photonic doppler velocimetry and alignment systems.
- Need for thermal monitoring and control infrastructure to maintain sample temperature uniformity.
- Adaptation considerations for various sample geometries and material systems beyond aluminum and magnesium.
Biopharma FAQs
Chapters in this video
0:04
Title
0:44
The Customized Single-stage Gas-gun
1:37
Sample and Target Material Preparation
2:55
Assembly of the Custom Heat-resistant Sabot
3:54
Assembly of the Test Materials Within the Gas-gun
5:07
Arrangement and Alignment of the Laser-based Diagnostics
6:01
Execution of High Temperature Reverse Geometry Normal Impact Experiments
6:48
Results: The Free Normal Surface Velocity vs. Time for a Range of Temperatures
10:01
Conclusion
