Application
Alternative to tensile testing
i3D® is the alternative to a tensile testing machine and to classical tensile testing whenever local part zones, small geometries, screening tasks and part-near stress-strain curves matter more than global averages.
Classical tensile testing delivers global averages from a standardized specimen. i3D® addresses the relevant zone directly on the real part, for example weld, edge zone, heat-affected zone or small geometry.
i3D® delivers local stress-strain curves as well as yield strength Rᶦₚ₀,₂ and tensile strength Rᶦₘ directly from the Imprint Test. This creates a part-near materials statement instead of only a global reference from the tensile specimen.
When parts are too small, too valuable or too complex for a clean tensile specimen, i3D® becomes the much more direct alternative to a tensile testing machine. The testing route stays on the part instead of being blocked by specimen geometry.
For alloy variants, heat treatments, process windows or QA comparisons, i3D® is much more efficient than running a complete tensile test for each individual state. This is where the alternative to a tensile testing machine becomes especially strong economically.
Scientific positioning
Tensile testing remains the reference whenever standard-compliant global proof from standardized tensile specimens is required. i3D® is the stronger alternative wherever local materials statements, real part zones and a more direct testing route matter more than the classical global tensile specimen.
local
directly from the relevant zone instead of as a global average from the tensile specimen
without tensile specimen
no detour through standardized specimen preparation when the task is local and part-near
DIN SPEC 4864 + ASTM E3499
Indentation Plastometry with 3D imprint measurement and inverse FEM
Not every task needs the same testing architecture. For global standard proof, tensile testing remains strong. For local zones, real parts and fast classification of many states, i3D® often becomes the better alternative to a tensile testing machine.
| Criterion | Classical tensile testing | i3D® as alternative |
|---|---|---|
| Standard-compliant global proof | strong when standardized tensile specimens are required | complementary when additional local information is needed |
| Local part zone | described only indirectly through a global specimen | measured directly on the relevant zone |
| Small geometries and real parts | often high preparation effort or not practical at all | much more direct and part-near |
| Screening of many states | slow because of specimen production and individual tensile tests | much more efficient for variants, states and QA |
| Local stress-strain curves | not directly from the relevant part zone | directly from the relevant zone with i3D® |
Tensile testing remains the correct method when standardized tensile specimens, standard-compliant global proof and classical material release based on global values are required.
Where a global stress-strain curve from a defined tensile specimen must remain the reference, i3D® does not replace tensile testing as a blanket claim. The strength of i3D® lies where the technical question is local and part-near.
Whenever the relevant answer sits in a local zone, the global tensile specimen often loses technical proximity. Exactly there i3D® becomes the better alternative to a tensile testing machine.
This applies to small geometries, real parts, welds, edge zones, coated areas, heat-affected zones and to screening tasks with many states or variants.
i3D® is based on Indentation Plastometry with instrumented indentation, 3D imprint measurement and inverse FEM. Local elastic-plastic material behavior is back-calculated from the real imprint.
The method is positioned through DIN SPEC 4864 and ASTM E3499. For the evaluation as an alternative to a tensile testing machine, exactly this scientific basis matters because it makes the local materials statement technically traceable and reproducible.
i3D® delivers local stress-strain curves as well as yield strength Rᶦₚ₀,₂ and tensile strength Rᶦₘ directly from the relevant zone. For many R&D, QA and screening tasks, this local statement is more valuable than a global average from the tensile specimen.
That changes the message from the general phrase “alternative to tensile testing” to the precise statement “better alternative to tensile testing machine for local materials testing and direct technical decisions on the real part”.
Contacts
Useful when the local zone, part geometry, target values and the role of classical tensile testing in the project need a clean technical classification.
