Extension and Compression of Spring Apparatus | FortiTestX 03
The Extension and Compression of Spring Apparatus is a wall-mounted experimental unit designed to demonstrate Hooke’s Law through both compressive and tensile loading of helical springs. Made by Scientico India, ISO 9001:2015 certified, and supplied with a calibration certificate and operation manual.
The FortiTestX 03 Extension and Compression of Spring Apparatus is a wall-mounted experimental unit designed to demonstrate Hooke’s Law through both compressive and tensile loading of helical springs. Manufactured by SCIENTICO, this apparatus is intended for use in strength of materials and mechanics of solids laboratory courses at engineering colleges, polytechnic institutes, and technical training centres. By accommodating both spring types within a single unit using a common loading mechanism, it provides a more comprehensive study of spring behaviour than a single-mode apparatus, and supports both graphical and numerical methods for spring constant determination.
Product Overview
Springs serve as energy-storing and force-restoring elements across a wide range of engineering applications. Automotive suspension systems rely on compression springs to absorb vertical wheel movement, while spring balances use deflection under load to measure applied forces. Both compression and extension springs operate under the same governing principle, Hooke’s Law, which states that within the limit of proportionality, the deflection of a spring is directly proportional to the applied load.
The FortiTestX 03 is built around a single load application mechanism that serves both spring modes without reconfiguration of the weight system. A compression spring is seated flat against the lower inner surface of the anodized aluminum wall-mounted housing, with industry-standard ground ends ensuring stable and uniform seating. Extension springs hang from an upper adjustable rod connected to a moving plate within the compression mechanism. The profiled boss, with its chamfered face, centers the load on the spring and is designed to accommodate springs of varying outer diameters in both compression and extension configurations.
Compression is measured using a built-in scale and pointer. The compression indicator is adjustable along the load hanger shaft to set the zero reference for springs of different free lengths. For extension springs, the top bracket is repositionable along the upper shaft to adjust the initial height of the spring. Students apply calibrated weights incrementally, record the change in spring length at each load step, plot load versus deflection graphs, and calculate the spring constant. A parallel numerical calculation exercise, using the spring’s measured physical dimensions and the supplied formulae, allows direct comparison with experimental results and manufacturer data.
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model-specific, ISO 9001:2015 compliant. Supplied to universities and institutions in 30+ countries.
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| Parameter | Details |
|---|---|
| Model | FortiTestX 03 |
| Mounting | Wall-mounted, anodized aluminum housing |
| Measurement Scale | Built-in scale with pointer; adjustable compression indicator |
| Loading Mechanism | Single common load hanger for both compression and extension testing |
| Number of Compression Springs | 6 |
| Compression Spring Outer Diameters | 1 x 24 mm, 1 x 25 mm, 1 x 34 mm, 1 x 35 mm, 1 x 44 mm, 1 x 46 mm |
| Compression Spring Wire Diameters | Multiple wire diameters, range 1.5 mm to 2.5 mm |
| Extension Springs, Set 1 | Outer diameter 15 mm; 3 different wire diameters |
| Extension Springs, Set 2 | Outer diameter 20 mm; 3 different wire diameters |
| Calibrated Weights Supplied | 1 x 1 N hanger, 2 x 1 N, 4 x 2 N, 6 x 5 N |
| Scope of Delivery | 1 experimental module, 1 set of compression springs, 1 set of extension springs, 1 set of weights, 1 instruction manual |
Key Features
- Single wall-mounted unit capable of testing both compression and extension springs
- Common load hanger and weight set used for both spring modes, no separate loading hardware required
- Profiled boss with chamfered face self-centers the load and accommodates a range of spring outer diameters
- Adjustable compression indicator allows zeroing for springs of varying free lengths
- Repositionable upper bracket enables adjustment of the initial extension spring height
- Supplied with 6 compression springs and 6 extension springs covering multiple diameter and wire diameter combinations
- Built-in scale with pointer for direct deflection measurement
- Comprehensive experimental manual with reference data and spring constant calculation formulae
Applications
- Experimental verification of Hooke’s Law under both compressive and tensile loading
- Determination of spring stiffness using load-deflection graphs
- Numerical calculation of spring constant from measured spring dimensions
- Comparative study of how wire diameter, coil diameter, free length, number of turns, and material affect spring stiffness
- Plotting and analysis of load versus compression and load versus extension graphs
- Side-by-side comparison of compression and extension spring behaviour under equivalent loads
- Comparison of experimental results with theoretical estimates and manufacturer-supplied spring data
Construction and System Design
The housing is fabricated from anodized aluminum, providing a rigid and corrosion-resistant wall-mounting frame. The lower seating surface is flat and horizontal to ensure stable compression spring placement with ground ends. The profiled boss is precision-machined with a chamfered face for consistent axial loading across springs of different outer diameters, and is designed to function in both the compression and extension loading configurations. The extension spring upper bracket is mounted on a vertically adjustable shaft, allowing the unit to accommodate springs of different free lengths without hardware changes. The load hanger incorporates a solid base for safe and stable suspension of the calibrated weight set. The built-in measurement scale and adjustable pointer provide direct, readable deflection values for both spring types.
Export and Supply Capability
SCIENTICO manufactures and supplies the FortiTestX 03 Extension and Compression of Spring Apparatus to engineering institutions and laboratory equipment distributors internationally. The unit is packaged for safe transit and is suitable for supply to universities, technical colleges, and vocational training institutes across export markets. Customization of spring sets or weight configurations is available upon inquiry.
1. What is the difference between the FortiTestX 02 and the FortiTestX 03?
The FortiTestX 02 is a dedicated compression spring testing unit, while the FortiTestX 03 is a combined apparatus capable of testing both compression and extension springs using a single load hanger and weight set. The FortiTestX 03 is better suited for courses that require the study of both spring types within the same laboratory session.
2. How are extension springs tested on the FortiTestX 03?
Extension springs hang from an upper adjustable rod connected to the moving plate of the compression mechanism. The top bracket is repositioned along the upper shaft to set the correct initial spring height. The same calibrated weights and load hanger used for compression testing apply the tensile load to the extension spring.
3.How many springs are supplied with the FortiTestX 03?
The apparatus is supplied with 6 helical compression springs with outer diameters from 24 mm to 46 mm and wire diameters ranging from 1.5 mm to 2.5 mm, along with 6 extension springs in two outer diameter groups, 15 mm and 20 mm, each available in 3 wire diameters.
4.Can the same weight set be used for both compression and extension experiments?
Yes. The FortiTestX 03 uses a single common load hanger and calibrated weight set, comprising 1 x 1 N hanger, 2 x 1 N, 4 x 2 N, and 6 x 5 N weights, for both compression and extension loading. No separate loading hardware is required for switching between the two modes.
5.What experiments can be conducted with the FortiTestX 03?
The apparatus supports verification of Hooke’s Law for both spring types, determination of spring stiffness by graphical and numerical methods, comparative study of the effect of wire diameter, coil diameter, free length, and number of turns on stiffness, and comparison of experimental results with theoretical and manufacturer data.
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