Parallel Stress Rupture Test Stand with Isolation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing material testing methods require lengthy and inconsistent testing environments, especially for destructive tests, which can affect the accuracy of lifetime analyses due to variations in test conditions and the impact of one sample's failure on others.

Innovation Solution

A test stand system with a frame, clamps, weight platforms, and a tensioning platform that allows for uniform tension application and isolation of samples under controlled atmospheric and temperature conditions, featuring a cushioning pad to mitigate impact forces and prevent adhesion, enabling parallel testing of multiple samples with variable weights and tensions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple samples are tested in parallel to improve productivity, then testing efficiency increases, but test condition consistency deteriorates due to environmental variations and inter-sample interference

Engineering Contradiction:
Improvetesting efficiencyVSAvoidtest condition consistency
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The testing system is segmented into independent vertical test stations, each with its own clamp assembly, weight platform, and isolation barriers. This segmentation allows multiple samples to be tested in parallel while maintaining independent test conditions for each sample, thus improving productivity without compromising reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Isolation barriers and cushioning elements are introduced as intermediary components between adjacent test stations. These intermediaries prevent mechanical interference and environmental cross-contamination between parallel tests, enabling consistent test conditions across multiple samples tested simultaneously.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If destructive testing is performed to obtain reliable material properties, then accurate lifetime analysis is achieved, but test environment stability deteriorates due to impact forces from sample failure

Engineering Contradiction:
Improvelifetime analysis accuracyVSAvoidtest environment stability
Core Design Contradiction:
Measurement precisionVSStability of the object's composition

Solution Approach 1:

Cushioning elements are pre-installed at the bottom of each test station and isolation barriers are positioned between adjacent stations before testing begins. When a sample fails destructively, these pre-positioned cushioning elements absorb impact forces and isolation barriers prevent the propagation of mechanical shocks to other test stations, maintaining test environment stability throughout the destructive testing process.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If uniform tension is applied to multiple samples to ensure consistent testing, then measurement reliability improves, but device complexity increases due to synchronized movement requirements

Engineering Contradiction:
Improvemeasurement reliabilityVSAvoidsynchronized movement mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A single tensioning platform serves multiple test stations simultaneously, providing uniform tension application to all samples. This multi-functional approach ensures measurement reliability through consistent tensioning while avoiding the complexity of individual actuation systems for each sample.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This system ensures consistent and reliable measurement of stress rupture points for materials by maintaining controlled conditions and isolating samples, reducing the impact of one sample's failure on others, thus improving the accuracy and efficiency of material testing.

Implementation Method 1

a cushioning layer configured to mitigate a force of impact from the first stack line on the tensioning platform

Methodology Applied
Scientific EffectImpact force mitigation: Damping

Implementation Method 2

a non-stick layer disposed between the cushioning layer and the first stack line configured to prevent the first stack line from adhering to the cushioning layer

Methodology Applied
Scientific EffectNon-stick property: Friction

Implementation Method 3

a first weight platform configured to carry a first user-defined amount of weight

Methodology Applied
Scientific EffectGravity: Gravitation

Implementation Method 4

a second weight platform configured to carry a second user-defined amount of weight

Methodology Applied
Scientific EffectGravity: Gravitation

Implementation Method 5

a tensioning platform configured to uniformly move the first weight platform and the second weight platform between: a first distance relative to the first upper clamp and the second upper clamp; and a second distance, greater than the first distance

Methodology Applied
Scientific EffectMechanical force: Mechanical Force

Data Source

PatentUS11326994B2Parallel sample stress rupture test in a controlled environment
Publication Date: 2022.05.10 THE BOEING CO
  • US11326994B2 patent drawing
  • US11326994B2 patent drawing
  • US11326994B2 patent drawing

AI summary

The present disclosure provides for parallel sample stress rupture test in a controlled environment by loading predefined amounts of weight on stack lines; positioning the stack lines on a tensioning platform in alignment with respective upper clamps when the tensioning platform is a first distance away from the upper clamps; clamping samples to a corresponding lower clamp and upper clamp pair; and moving the tensioning platform to a second distance away from the upper clamps that is greater than the first distance such that the stack lines are suspended above the tensioning platform to apply individual tensions to the individual samples based on the predefined amount of weight loaded onto the individual stack lines.