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TTS LABS - Specimen Preparation

Specimen Preparation

Fully Equipped Specimen Prep

Specimens for fatigue tests are carefully machined to meet specific requirements for their dimensions and surface finish. The preparation of the specimens is critical for fatigue testing.

Machining: The specimen should be machined to minimize the chances of residual stresses or machining marks on the surface.

Grinding: Before polishing, the specimen should be low-stress ground.

Polishing: The specimen should be polished longitudinally to remove any machining marks.

Machining Capabilities

Our in-house machine shop is staffed by exceedingly gifted administrators. From metal crude materials to fabricated parts, we plan examples for a wide run of materials including solidified steels, nickel-base amalgams, and plastics.

Fast Turnaround: We understand the importance of speed. Our 12,000 sq. ft. area ensures rapid completion.

Lathe Work

Test Specimens Summary

Compact tension C(T) Middle tension M(T) Single edge bend (SEB) Rotating beam fatigue High and low cycle fatigue Fracture toughness Flat fatigue RR Moore Double edge notch (DEN) Dynamic tear Weld qualification E238 bearing B769 shear Stress rupture Gleeble Charpy V-notch impact Torsion Flat tensile Round tensile Jominy Round compression Single and double-shear Stress corrosion Hydrogen embrittlement Metallography samples

Quality You Can Trust

Selecting TTS means collaborating with a skilled provider committed to providing excellent specimen preparation. TTS is aware that precise test findings depend on well-machined specimens.

We guarantee that every project satisfies the highest quality requirements by adhering to industry specifications including ASTM, AWS, ISO, EN, DIN, JIS, and NACE.

Every aspect of our specimen machining services is painstakingly recorded.

Lathe Parts Specimen

Specimen Preparation Process

Sawing and Extraction
As specified in a necessary specification or specified in a drawing that comes with the order, test specimens are rough cut to length by sawing from a precise place on the sample material or part. Technicians chop the material into a manageable size in this step, usually in proximity to the finished specimen. Etching can be used to determine the location of the center line or heat-affected zone in the case of welds. A Maxiem waterjet cutting system is part of TTS sawing apparatus.
Turning
In order to center and turn a part in diameter, a lathe rotates it against a stationary cutting tool. Since rough-cut test specimens are often square, lathing is necessary for all round specimens including tensile, stress rupture, Gleeble, Jominy, rotating beam, and fatigue. When fixturing on test equipment is necessary, turning threads the ends and shortens the gage length in addition to further refining specimen measurements.
Milling
Material is removed during milling by passing a workpiece through a rotating cutter with many teeth. The benefit: Milling produces a wide variety of shapes, and machined surfaces can be flat, angular, or curved. Test specimens such as flat tensile, stress rupture, and hardness are precisely machined by this procedure. Additionally, certain corrosion specimens and side, face, and root bend specimens for weld qualifications are available. Charpy specimens can also be further refined using milling for the following step: grinding.
Low-Stress Grinding
Ensures surface integrity by using specific wheel speeds and feed rates to prevent thermal damage to the specimen surface. This procedure is used for flat tensile and hardness specimens where surface finish is critical to the test results.

TTS Industrial Solutions Pvt Ltd, formerly known as Tweak Technik Solutions, was established in 2021. By 2022, we broadened our portfolio to include comprehensive lab services, and in 2024, we rebranded as TTS Industrial Solutions Pvt Ltd, an ISO 9001:2015 Certified Company.

CIN: U71200TS2024PTC184659

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Get In Touch

📞 +91 82473 29445
📞 +91 99596 69540
📞 +91 96661 02172
📞 +91 88864 72515
✉️ info@tweaktechsol.com
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