Structural Strength Testing of Components for a Large Transport Aircraft
Project name: Structural Strength Testing of Components for a Large Transport Aircraft
AVIC (Aviation Industry Corporation of China) has procured a 1,280-channel DE-series dynamic testing system to conduct strain measurement and data analysis for static strength tests on critical components (e.g., radome) of a large transport aircraft. This system supports structural validation for new aircraft development, modifications, and upgraded variants, providing scientific data to ensure airworthiness and operational safety.
1. Test Objectives & Key Applications
(1) Static Strength Verification
Radome & Aerostructure Testing: Evaluates load-bearing capacity under ultimate static loads (e.g., aerodynamic pressure, ice impact).
Joint & Mounting Point Analysis: Validates stress distribution in antenna mounts, wing-fuselage interfaces, and other critical connections.
(2) Component Certification
Supports compliance with CCAR-25/FAR-25 airworthiness standards for transport-category aircraft.
Provides data for fatigue life predictions and damage tolerance assessments.
2. DE-Series Testing System Capabilities
(1) High-Precision Strain Measurement
1,280 synchronized channels for full-field strain mapping;
Micro-strain (με) resolution to detect early plastic deformation.
(2) Multi-Sensor Integration
Combines strain gauges, fiber optics, and LVDTs for displacement monitoring.
Real-time data fusion to correlate mechanical loads with structural responses.
(3) Automated Load Simulation
Replicates multi-axis static loads (tension/compression/bending/torsion) via hydraulic actuators.
Non-destructive testing (NDT) compatibility (e.g., ultrasonic flaw detection post-loading).
3. Test Methodology
Progressive Loading: Incremental force application until design limit load (DLL) and ultimate load (ULL);
Failure Mode Analysis: Identifies buckling, cracking, or delamination thresholds;
Digital Twin Correlation: Validates FEA models with experimental data.
4. Engineering Outcomes
Radome Optimization: Redesigned composite layup to reduce stress concentrations by 30%;
Weight Reduction: Validated lightweight alloys for non-critical components without compromising strength;
Faster Certification: Cut 20% of traditional testing time through automated data processing.
Significance: This system forms a backbone for future aircraft programs, enabling rapid iteration of structural designs. Next-phase development will incorporate AI-driven anomaly detection and cloud-based test data management.
