Single Station Jounce Tester

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1. Product Overview

The Single Station Jounce Tester is designed for vibration durability testing of automotive seat cushions and backrests. It evaluates the fatigue strength, wear resistance, and overall durability of seat components, including the frame, foam, and upholstery. This tester ensures realistic simulation of body weight and vibration loads without introducing excessive inertia, making it suitable for both seat components and complete seating systems.

2. Product Features

Simulates real-world vertical vibration loads with sinusoidal motion.

Evaluates fatigue life of seat frame, cushion foam, and fabric upholstery.

Upper jounce assembly includes body form and adjustable weights for realistic load simulation.

Height and lateral adjustment ensure proper alignment and horizontal parallelism.

Overhead crane for easy installation and removal of test samples.

Servo-hydraulic lower jounce table with PC-based closed-loop control.

Programmable vibration frequency, amplitude, and acceleration with four control modes: table displacement, table acceleration, upper assembly displacement, and upper assembly acceleration.

Optional slave stations allow simultaneous testing of multiple samples.

Designed to prevent excessive inertia loads, ensuring realistic and reliable test results.

3. Applicable Standards

QC/T 740-2017 – Automotive Seat Assembly Fatigue Test Standard

SAE J826-2002 – Anthropomorphic Test Devices for Vehicle Seats

4. Test Principle

The tester applies controlled vibration to the seat cushion and backrest at a set frequency and amplitude for a predetermined number of cycles. After testing:

Seat frame should remain intact with no cracks.

Foam and cushion should maintain their shape without deformation.

Upholstery should show no damage.

Maximum H-point variation remains within rated range.

Typical test setup:

Seat cushion: 100,000 vibration cycles at 100 times/minute.

Backrest: 50,000 vibration cycles at 100 times/minute.

5. Technical Parameters

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