Torsion of Bar | FortiTestX - 21

Key Features

Key Features

• Complete torsion of bar strength of materials lab equipment unit: wall-mounted frame, movable support blocks, chuck and bearing clamping options, dial gauge, full bar set, weight set, and storage system all supplied
• Comprehensive bar set covering four materials: brass, copper, and aluminium in two lengths (390 mm and 690 mm) at 10 mm diameter, and steel in seven diameters (5 mm to 12 mm) at 390 mm length for direct cross-material and cross-section comparison
• Two movable support blocks with clamping chucks and bearings offering a range of clamping options to vary end conditions and clamping length
• Mass disc and mass hanger clamped to the lower end of the torsion bar for controlled torque application using the supplied calibrated weight set
• Dial gauge deformation measurement for precise angular twist recording throughout the torsion of bar experiment
• Supports investigation of material influence, bar diameter influence, and clamping length influence on angle of twist within a single apparatus
• Dedicated storage system houses and organises all components for safe keeping and rapid session setup
• Well-structured instructional material covers torsion fundamentals and provides step-by-step experiment guidance
• ISO 9001:2015 certified manufacture; CE marked product

Experiments

• Determination of the shear modulus of various materials
• Angle of twist dependent on clamping length
• Angle of twist dependent on bar diameter
• Formulation of proportional relationships for the angle of twist

Construction and Design

Torsion of Bar FortiTestX 21 is constructed as a wall-mounted strength of materials lab equipment unit built on a rigid base frame secured to the wall, with the torsion bar clamped vertically in a chuck at the upper end. A mass disc and mass hanger are clamped to the lower end of the bar using a chuck, and the calibrated weight set is hung from the mass hanger to apply a controlled torque to the bar. The bar is fixed at the test section to two movable support blocks, each equipped with clamping chucks to grip the torsion bars and bearings to support the bars during bend tests. The movable nature of the support blocks allows clamping length to be varied systematically across experiments. A dial gauge is positioned to record the angular deformation of the bar resulting from the applied torque. The selection of round bars across four materials and multiple diameters enables direct comparison of torsional behaviour under identical loading conditions, isolating the effect of material, diameter, and clamping length individually. All components of this torsion of bar apparatus are arranged clearly on the frame and housed in a dedicated storage system for organised transport and safe keeping between laboratory sessions. All construction and materials conform to ISO 9001:2015 quality standards and meet CE marking requirements.

Scope of Delivery

• 1 x Experimental module (Torsion of Bar FortiTestX 21)
• 1 x Set of round bars (steel, brass, copper, aluminium across multiple lengths and diameters)
• 1 x Set of weights (1 x 0.5 N hanger, 2 x 0.5 N, 2 x 1 N, 2 x 2 N, 3 x 5 N)
• 1 x Measuring tape
• 1 x Instruction manual

Standards & Compliance

• Manufactured under ISO 9001:2015 Quality Management System
• CE Marking - European Conformity where applicable
• Supplied with calibration certificate, operation manual, and experiment guide
• 12-month manufacturer's warranty (parts & labour from installation)

Ordering & Delivery

• Incoterms: CIF to destination seaport, FOB Mundra/Nhava Sheva, or Ex-Works Ambala
• Lead time: 3–5 weeks production + sea transit to destination
• Payment: LC (Letter of Credit) or T/T bank transfer against proforma invoice
• Documentation: commercial invoice, packing list, bill of lading, certificate of origin, insurance certificate

Frequently Asked Questions

Q1: Which bar materials and sizes are supplied with the Torsion of Bar FortiTestX 21?
The apparatus includes round bars in four materials. Brass, copper, and aluminium are each supplied in two lengths (390 mm and 690 mm) at 10 mm diameter. Steel bars are supplied in seven diameters (5 mm, 6 mm, 7 mm, 8 mm, 10 mm, 11 mm, and 12 mm) at 390 mm length, enabling comprehensive cross-material and cross-section comparison.

Q2: How is clamping length varied in the FortiTestX 21?
The two support blocks are movable along the frame, allowing the clamping length to be adjusted systematically between experiments. This enables direct investigation of the influence of clamping length on the angle of twist under a constant applied torque.

Q3: How is torque applied in the Torsion of Bar FortiTestX 21?
A mass disc and mass hanger are clamped to the lower end of the torsion bar. The calibrated weight set is hung from the mass hanger to apply a controlled and measurable torque to the bar throughout the torsion of bar experiment.

Q4: What clamping options are available at the support blocks?
Each support block includes both a clamping chuck for gripping the torsion bar rigidly and a bearing for supporting the bar during bend tests. This range of clamping options allows different end conditions to be applied to the bar across the defined experiments.

Q5: What is the shear modulus determination experiment in the FortiTestX 21?
The shear modulus determination experiment measures the angle of twist produced in bars of known material, diameter, and clamping length under a defined applied torque. By applying the torsion formula and comparing results across the four supplied materials, the shear modulus of each material can be calculated and verified against standard reference values.