EWIN-TECH PCT-100 Automated Assembly and Compression Test Fixture
| Brand | EWIN-TECH |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | OEM Manufacturer |
| Country of Origin | China |
| Model | PCT-100 |
| Pricing | Available Upon Request |
| Actuation | Pneumatic |
| Pressure Control | Closed-loop regulated |
| Active Area Compatibility | ≤25 cm² |
| Modular Design | Interchangeable flow field plates |
| Optional Modules | In-situ compression monitoring, current distribution mapping, temperature-controlled platens |
Overview
The EWIN-TECH PCT-100 Automated Assembly and Compression Test Fixture is an engineered platform for controlled mechanical assembly and in-situ performance evaluation of proton exchange membrane fuel cell (PEMFC) and electrolyzer components. It operates on a precision pneumatic actuation principle, delivering repeatable, programmable compressive force across the membrane electrode assembly (MEA), gas diffusion layers (GDLs), bipolar plates, and custom flow field configurations. Unlike manual press systems, the PCT-100 integrates closed-loop pressure regulation to maintain uniform stress distribution—critical for eliminating localized delamination, ensuring consistent interfacial contact resistance, and enabling quantitative correlation between clamping pressure and electrochemical output. Designed for R&D laboratories and component validation facilities, it supports fundamental studies on compression-dependent transport phenomena, interfacial degradation mechanisms, and stack-level mechanical integrity under thermal-cycling conditions.
Key Features
- Pneumatically Actuated, Closed-Loop Pressure Control: Integrated pressure transducers and proportional control valves enable real-time feedback and stable force application from 0.1 MPa to 3.0 MPa (configurable range), with repeatability better than ±0.5% FS.
- Modular Flow Field Interface: Standardized mounting interface accommodates interchangeable flow field plates (serpentine, parallel, interdigitated) with alignment pins and vacuum-assisted sealing for leak-tight operation during wet testing.
- Rapid Tooling Exchange System: Quick-connect clamping mechanism eliminates need for re-torquing or disassembly; fixture reconfiguration time reduced to under 90 seconds per setup change.
- Scalable Active Area Support: Optimized for MEAs and single-cell components up to 25 cm², with optional adapters available for sub-5 cm² micro-devices and standardized 50 cm² test cells.
- Multi-Sensor Integration Ready: Pre-drilled and threaded ports support optional integration of strain gauges, thermocouples (Type T/K), and distributed current sensors without structural modification.
Sample Compatibility & Compliance
The PCT-100 is validated for use with Nafion™-based membranes (e.g., N115, N212), carbon-based GDLs (Sigracet®, Toray®), catalyst-coated membranes (CCMs), and stamped titanium or graphite bipolar plates. Its mechanical architecture conforms to ASTM D7264/D7264M (flexural properties of polymer matrix composites) and ISO 11357-3 (thermal analysis of polymers under compression). The fixture’s load frame design meets GLP-compliant documentation requirements for traceability, with all critical dimensions documented per ASME Y14.5 geometric tolerancing standards. When paired with certified instrumentation, data generated satisfies audit requirements under ISO/IEC 17025 for calibration laboratories.
Software & Data Management
The PCT-100 operates via a dedicated Windows-based control interface supporting local scripting (Python API) and SCPI command protocol for integration into automated test benches. All pressure profiles, dwell times, and sensor timestamps are logged in HDF5 format with embedded metadata (user ID, sample ID, environmental conditions). Audit trails include operator login history, parameter change logs, and digital signatures compliant with FDA 21 CFR Part 11 for regulated environments. Export options include CSV, MATLAB .mat, and direct database push to LIMS platforms via ODBC.
Applications
- Quantification of compression-induced changes in through-plane conductivity and oxygen transport resistance (OTR)
- Evaluation of gasket creep behavior and seal integrity under cyclic loading
- Correlation of interfacial contact resistance (ICR) with applied clamping pressure across temperature gradients (25–80 °C)
- Accelerated mechanical fatigue testing of MEA edge seals and catalyst layer cracking thresholds
- Validation of novel flow field geometries under realistic stack-relevant compression conditions
FAQ
What is the maximum recommended clamping pressure for Nafion-based MEAs?
Typical operational range is 1.0–2.0 MPa; exceeding 2.5 MPa may induce irreversible membrane thinning or catalyst layer fracture—validated per DOE Fuel Cell Tech Team guidelines.
Can the PCT-100 be integrated with potentiostats or fuel cell test stations?
Yes—standard analog I/O (0–10 V, 4–20 mA) and digital triggers (TTL) allow synchronized acquisition of electrochemical data alongside mechanical parameters.
Is third-party calibration certification available?
EWIN-TECH provides NIST-traceable calibration reports for pressure and displacement sensors upon request, aligned with ISO/IEC 17025 accredited providers.
Does the system support humidity-controlled testing environments?
The base fixture is compatible with external environmental chambers; optional heated/humidified platen modules (up to 95% RH, 80 °C) are available as add-on configurations.
What documentation is provided for regulatory submissions?
Full technical file includes mechanical drawings, risk analysis (FMEA), software validation summary (IQ/OQ), and traceability matrix linking hardware IDs to calibration records.
