OK-S-25 High-Acceleration Shock Testing Machine

Overview

The OK-S-25 High-Acceleration Shock Testing Machine is a precision-engineered electro-mechanical system designed to replicate transient, high-intensity mechanical shock environments encountered during transportation, handling, operational use, or accidental drop events. It operates on the principle of controlled deceleration: a rigid test table—rigidly coupled to a high-stiffness frame—is accelerated to a defined velocity and then subjected to rapid, programmable deceleration via impact with a calibrated pulse generator. This generates a repeatable acceleration-time waveform (e.g., half-sine, terminal-peak sawtooth, trapezoidal) with precisely controllable peak magnitude (up to 1000 G), pulse duration (typically 0.5–20 ms), and spectral content. Unlike quasi-static load testing, shock testing evaluates dynamic structural integrity, interface robustness, solder joint reliability, and functional continuity under inertial loading conditions where mass effects dominate. The OK-S-25 employs a hybrid actuation architecture—primarily pneumatic/hydraulic drive for high-energy pulses, complemented by optional electromagnetic actuation modules for enhanced waveform fidelity and multi-pulse sequencing—making it suitable for both compliance-driven qualification and failure-mode-driven root-cause analysis.

Key Features

• High-reproducibility shock generation with ±3% amplitude repeatability across 1000 G peak acceleration at 4.5 m/s impact velocity
• Modular pulse generator interface supporting standardized waveform shapers (rubber, lead, silicone, felt) for half-sine, terminal-peak sawtooth, and trapezoidal pulse synthesis per IEC 60068-2-27, MIL-STD-202G Method 213, and JESD22-B104
• Integrated high-frequency piezoelectric accelerometers (up to 50 kHz bandwidth) mounted directly on the test table surface, synchronized with 1 MS/s data acquisition
• Dual-axis motion control system enabling vertical and horizontal shock orientation without mechanical reconfiguration
• Programmable test sequences: up to 999 shocks per session, with variable G-level, pulse width, interval timing, and directional polarity
• Robust cast-iron base structure with reinforced steel support columns ensuring modal isolation above 1 kHz and minimizing energy loss during pulse transmission

Sample Compatibility & Compliance

The OK-S-25 accommodates specimens up to 50 kg (standard configuration) on a 300 × 300 mm rigid aluminum test table. Fixture mounting follows ISO 10816-3 and ASTM D4169-22 guidelines for fixture rigidity and center-of-gravity alignment. The system supports full traceability per GLP/GMP requirements, including audit-ready calibration logs (traceable to NIM, China), sensor verification reports, and waveform validation certificates. It is pre-configured to execute standard test profiles from IEC 60068-2-27 (Shock), MIL-STD-883 Method 2002 (Mechanical Shock), and US Department of Defense Test Method Standard 461G (RS105). Optional software modules enable automated pass/fail evaluation against user-defined tolerance bands (e.g., ±10% on peak G, ±15% on pulse duration) aligned with internal reliability specifications.

Software & Data Management

Control and analysis are managed via OK-ShockSuite™ v3.2—a Windows-based application compliant with FDA 21 CFR Part 11 (electronic signatures, audit trail, role-based access control). The software provides real-time oscilloscope-style waveform preview, closed-loop waveform correction using adaptive feedforward compensation, and post-test spectral analysis (FFT, shock response spectrum). All raw time-domain data (acceleration, velocity, displacement) are stored in IEEE-compliant .tdms format with embedded metadata (test ID, operator, timestamp, environmental conditions). Export options include CSV, MATLAB (.mat), and PDF-certified test reports containing annotated waveforms, statistical summaries (Cp/Cpk for repeatability), and conformance statements per selected standards.

Applications

• Electronics: Drop survivability of smartphones, PCB assemblies, MEMS sensors, and BGA solder joints; qualification of automotive ADAS ECUs per ISO 16750-3
• Aerospace: Shock qualification of avionics enclosures, satellite separation mechanisms, and flight-critical connectors under MIL-STD-1540D
• Medical Devices: Validation of implantable pulse generator housings and diagnostic imaging subsystems per ISO 14971 risk management protocols
• Packaging Engineering: ISTA 3A/3E-compliant simulation of parcel-handling impacts, including corner-drop and edge-drop scenarios
• Industrial Components: Mechanical endurance assessment of relays, solenoids, optical isolators, and fiber-optic terminations under repeated shock exposure

FAQ

What shock waveforms can the OK-S-25 generate natively?

The system delivers half-sine, terminal-peak sawtooth, and trapezoidal pulses as standard. Custom waveforms—including field-recorded transients—can be replayed using the optional electromagnetic actuator module and waveform import function.
Is third-party calibration certification included with delivery?

Yes. Each unit ships with a NIST-traceable calibration certificate for the load cell and accelerometers, valid for 12 months. On-site recalibration services are available through OK Instruments’ authorized metrology partners in APAC and EMEA.
Can the OK-S-25 be integrated into an existing HALT/HASS test chamber environment?

Yes. The machine features Ethernet/IP and Modbus TCP interfaces for synchronization with environmental chambers and vibration systems. Mechanical integration kits (including anti-vibration mounts and signal-shielded cabling) are available as factory-installed options.
Does the system support automated pass/fail reporting per industry standards?

Yes. OK-ShockSuite™ includes configurable compliance templates for IEC, MIL-STD, and ASTM standards, with auto-generated PDF reports containing waveform overlays, statistical metrics, and digital signature fields.
What is the maximum specimen weight and dimensional envelope supported?

Standard configuration supports up to 50 kg on a 300 × 300 mm table. Extended-load variants (100 kg, 400 × 400 mm) and custom table inserts are available upon request.