What is the function of a high-pressure hydraulic pump system in SiC ceramic testing? Ensure Material Reliability

A high-pressure hydraulic pump system serves as a precise loading mechanism specifically designed for the destructive testing of Silicon Carbide (SiC) components. Its primary function is to generate and maintain stable hydraulic pressure up to 100 MPa against the inner walls of SiC tubes. This process accurately simulates the internal pressure loads the material will encounter during actual operation.

Core Takeaway While theoretical models predict material behavior, this hydraulic system provides the physical validation necessary for safety. By applying uniform internal stress, it validates strength evaluation models based on effective volume theory, ensuring the reliability of ceramic reactors.

Simulating Real-World Conditions

Accurate Internal Loading

The primary mechanical function of the system is to apply uniform hydraulic stress to the inner geometry of the component.

This mimics the specific internal pressure loads that SiC tubes face in active reactor environments.

High-Pressure Stability

Reliable testing requires consistent force application rather than sudden spikes.

The system provides stable, controlled pressure up to 100 MPa. This stability is essential for capturing accurate data points during destructive testing.

Validating Strength Models

Bridging Theory and Reality

Engineers use this system to move beyond theoretical calculations.

The data collected during these tests is used to validate strength evaluation models. Specifically, it tests predictions based on effective volume theory.

Ensuring Reactor Safety

The ultimate goal of this function is operational safety.

By experimentally verifying the strength of the tubes, the system confirms that ceramic reactors can withstand their design loads without catastrophic failure.

Understanding the Limitations

Destructive Methodology

It is important to recognize that this is a destructive testing method.

The components are subjected to extreme stress to test their limits. Consequently, the specific parts tested are often rendered unusable for operation.

Geometrical Constraints

This specific hydraulic method relies on pressurizing "inner walls."

Therefore, it is highly effective for tubular or vessel-like shapes but is not suitable for solid blocks or flat plates where internal pressure cannot be applied.

Making the Right Choice for Your Goal

To determine if this testing method aligns with your project requirements, consider the following:

• If your primary focus is validating safety models: This system provides the empirical data needed to confirm effective volume theory calculations.
• If your primary focus is testing tubular components: This method is ideal for simulating the actual internal hoop stresses found in reactor tubes.

This testing process transforms Silicon Carbide from a theoretically strong material into a proven, reliable solution for high-pressure applications.

Summary Table:

Feature	Function in SiC Strength Evaluation
Pressure Capacity	Generates stable hydraulic loads up to 100 MPa
Loading Mechanism	Applies uniform internal stress to tube inner walls
Model Validation	Physically verifies effective volume theory predictions
Testing Goal	Ensures safety and reliability of ceramic reactors
Primary Application	Destructive testing of tubular or vessel-shaped components

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References

1. Hiroaki Takegami, Shinji Kubo. Development of strength evaluation method of ceramic reactor for iodine-sulfur process and hydrogen production test in Japan Atomic Energy Agency. DOI: 10.1016/j.nucengdes.2019.110498

This article is also based on technical information from Kintek Solution Knowledge Base .