.. _auto_curve_yieldoffsetline:

*COMPUTE THE YIELD OFFSET LINE USING THE MODULUS, AND OFFSET FACTOR*
====================================================================

Constructs the classic 0.2 % (or user-defined) yield-offset line by shifting the elastic modulus line horizontally by the specified strain offset. Use this worker to overlay the offset line on a stress–strain curve when identifying the proof/yield stress graphically.

When to use
-----------

Classification: **process**.

Tagged: ``material_characterization``, ``modulus``, ``offset_line``, ``proof_stress``, ``stress_strain``, ``yield_offset``.

Inputs
------

.. list-table::
   :header-rows: 1
   :widths: 20 20 20 20 20 20

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - offset
     - offset
     - float
     - 0.002
     - 
     - Horizontal strain offset applied to the elastic modulus line (dimensionless strain, e.g. 0.002 for the standard 0.2 % offset rule); defaults to 0.002 if left unset.
   * - modulus
     - modulus
     - float
     - 1
     - 
     - Slope of the offset line, i.e. the elastic (Young's) modulus in consistent stress/strain units (e.g. GPa or MPa); defaults to 1 if left unset — always override with the actual material modulus.
   * - max_x
     - max_x
     - float
     - 1
     - 
     - Maximum strain (x-axis) value at which the offset line is truncated; defaults to 1e20 (effectively unlimited) — set this to the upper strain limit of the parent stress–strain curve to keep the plot tidy.

Outputs
-------

.. list-table::
   :header-rows: 1
   :widths: 20 20 20 20

   * - Label
     - ID
     - Type
     - Description
   * - curve_yieldoffsetline_output_1
     - curve_yieldoffsetline_output_1
     - vector
     - Two-column (strain, stress) vector representing the yield-offset line, ready to overlay on a stress–strain plot for graphical yield-point determination.

Disciplines
-----------

- data.curve.transform
- engineering.material.characterization

Runnable example
----------------

A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: `/api/workflow/example?id=curve_yieldoffsetline <https://www.d3view.com/api/workflow/example?id=curve_yieldoffsetline>`_

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>curve_yieldoffsetline</code>. Schema hash: <code>425a31ba1d12</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>