Electromechanical Load Frame
Electromechanical load frame with two-column vertical standing assembly and threaded columns for crosshead adjustment and closed-loop control of axial load/stress or axial displacement/strain. Servo control with closed-loop feedback from any of the eight (8) input channels or any real-time calculated function. The eFRM load frame can accommodate a large range of test fixtures. GCTS offers a large range of test apps for specific standards or custom test methods. GCTS offers several eFRM models, all of which have a 100 mm stroke with four (4) ADC channels with excitation (5 VDC or 10 VDC), simultaneous sampling, internal filtering, and selectable input range (from ±2.4 mV to ±20 V) and four (4) ADC channels with ±10 VDC fixed range.
* Load Capacity up to 90 kN Available
* Dynamic Electromechanical Load Frames Available
eFRM-20
HIGHLIGHTS
- 100-mm (4 inch) stroke
- 20 kN (5,000 lbf) Axial load capacity, up to 90 kN capacity available
- SR-LC-SSM-20k Load cell ±20 kN range. 0.05% precision
- Maximum vertical daylight opening: 595 mm
- Horizontal daylight opening: 279 mm
- Axial actuator speed range: 0.003 mm/min to 100 mm/min – (max 25 mm/min at full 20 kN load)
- Cyclic loading frequency up to 0.1 Hz with 10 mm peak-to-peak amplitude
- Four (4) ADC channels with excitation (5 VDC or 10 VDC), simultaneous sampling, internal filtering, and selectable input range (from ±2.4 mV to ±20 V)
- Four (4) ADC channels with ±10 VDC fixed range
- TCP/IP Communication
- Power Requirement: 90-260 VAC, 50-60 Hz
eFRM-20D
HIGHLIGHTS
- 100-mm (4 inch) stroke
- 20 kN (5,000 lbf) Axial load capacity
- SR-LC-SSM-20k Load cell ±20 kN range. 0.05% precision
- Maximum vertical daylight opening: 595 mm
- Horizontal daylight opening: 279 mm
- Axial actuator speed range: 0.003 mm/min to 600 mm/min
- Cyclic loading frequency up to 2 Hz
Includes an integrated data acquisition unit with the following specifications:
- Four (4) ADC channels with excitation, simultaneous sampling, internal filtering, and
selectable input range. - Four (4) ADC channels with ±10 VDC fixed range
- TCP/IP Communication
Power Requirement: 90-260 VAC, 50-60 Hz, 8 A @ 1 KVA
eFRM-50
HIGHLIGHTS
- 100-mm (4 inch) stroke
- 50 kN Axial load capacity
- SR-LC-LP50 ±50 kN (11 kip) Low Profile Precision Universal Load Cell with Base. 0.05% precision.
Includes an integrated data acquisition unit with the following specifications:
- Four (4) ADC channels with excitation, simultaneous sampling, internal filtering, and
selectable input range. - Four (4) ADC channels with ±10 VDC fixed range
- TCP/IP Communication
Power Requirement: 90-260 VAC, 50-60 Hz, 8 A @ 1 KVA
eFRM-90
HIGHLIGHTS
- Precise Closed-Loop Control: The eFRM-90 allows for precise closed-loop control of net deformation or crack mouth opening, enabling accurate measurement and control of critical parameters during testing.
- Flexible Control Options: You can easily change the feedback control mid-test from Load, displacement, net deflection, or CMOD, making it adaptable to various testing scenarios.
- Cost-Effective Solution: This system offers an economical option for commercial labs, eliminating the need for expensive and complex test setups.
- User-Friendly: Designed with ease of use in mind, the eFRM-90 is ideal for both seasoned professionals and newcomers to concrete testing.
- Comprehensive Testing Capabilities: It can perform a range of standard tests such as EN 14651, ASTM C1609/C1609M-19, and customized beam tests. Additionally, it offers a library of Apps to perform different ASTM and EN standards, including unconfined compression and indirect tension tests.
- Directional Control: The system excels in controlling displacement along the direction of the least principal stress, making it suitable for brittle materials like concrete and rock.
- Flexural and Direct Tension Testing: It is particularly well-suited for flexural and Direct Tension Tests (DTT) by accurately measuring and controlling crack opening, ensuring stable post-peak control.
- Customizable Procedures: Standard testing procedures can be easily customized, allowing for a combination of feedback control variables that can switch mid-test based on predefined threshold values or peak reversals.
- Additional Testing Capabilities: The eFRM-90 is compatible with fixtures and application software for measuring the modulus of elasticity, Poisson’s ratio, indirect tension, and more.
- Complex Loading Paths: This system can handle complex load or deformation paths, making it valuable for studying the intricate behavior of fiber-reinforced concrete under cyclic tension-tension and tension-compression loading.
- Maximum vertical daylight opening: 1209 mm
- Horizontal daylight opening: 405 mm
- TCP/IP Communication
- Power Requirement: 90-260 VAC, 50-60 Hz
eFRM-90S
HIGHLIGHTS
The GCTS eFRM-90S is a precision-controlled electro-mechanical loading frame designed for post-crack performance testing of Fiber Reinforced Concrete (FRC). This system combines precision with versatility, offering unmatched closed-loop control of net deformation, crack mouth opening (CMOD) or any other real time calculated parameter. It’s compact design, cost-effective and user-friendly design makes it a smart option for commercial labs. GCTS offers a broad spectrum of standard and customized tests, as well as fixtures and predefined Apps. Whether you intend to perform Q/C commercial work or research testing, the eFRM-90S promises accuracy, adaptability, and affordability, truly setting a gold standard in the industry.
- High Stiffness: 225 kN/mm allows for post failure analysis of the specimen
- Precise Closed-Loop Control: The eFRM-90S allows for precise closed-loop control of net deformation or crack mouth opening, enabling accurate measurement and control of critical parameters
during testing. - Flexible Control Options: You can easily change the feedback control mid-test from Load, displacement, net deflection, or CMOD, making it adaptable to various testing scenarios.
- Cost-Effective Solution: This system offers an economical option for commercial labs, eliminating the need for expensive and complex test setups.
- User-Friendly: Designed with ease of use in mind, the eFRM-90S is ideal for both seasoned professionals and newcomers to concrete testing.
- Comprehensive Testing Capabilities: It can perform a range of standard tests such as EN 14651, ASTM C1609/C1609M-19, and customized beam tests. Additionally, it offers a library of apps to perform different ASTM and EN standards, including unconfined compression and indirect tension tests.
- Directional Control: The system excels in controlling displacement along the direction of the least principal stress, making it suitable for brittle materials like concrete and rock.
- Flexural and Direct Tension Testing: It is particularly well-suited for flexural and Direct Tension Tests (DTT) by accurately measuring and controlling crack opening, ensuring stable post-peak control.
- Customizable Procedures: Standard testing procedures can be easily customized, allowing for a combination of feedback control variables that can switch mid-test based on predefined threshold values or peak reversals.
- Additional Testing Capabilities: The eFRM-90S is compatible with fixtures and application software for measuring the modulus of elasticity, Poisson’s ratio, indirect tension, and more.
- Complex Loading Paths: This system can handle complex load or deformation paths, making it valuable for studying the intricate behavior of fiber-reinforced concrete under cyclic tension-tension and tension-compression loading.
Relevant Standards
ASTM C1609/C1609M-19 Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (Using Beam With Third-Point Loading)
ASTM C1399 Standard Test Method for Obtaining Average Residual-Strength of Fiber-Reinforced Concrete (Withdrawn 2024)
ASTM D7012 Standard Test Methods for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures
EN 14651 Concrete Flexural Testing
