Declared geometry-factor screen
Mode-I fracture intensity
Inputs
User-entered dimensionless factor from a geometry-specific validated source; this workspace does not select it.
User-entered nominal tensile stress in the stated linear-elastic model.
User-entered half crack length for the geometry-factor definition.
User-entered reference used only for literal ratio arithmetic; no fracture conclusion is made.
Results
A wrong number here has physical consequences. Check the method and the boundary below before using this result, and have it reviewed by someone accountable for the design.
Mode-I stress intensityKI
14.037
MPa√mIntensity / declared toughness reference
0.28074
—Declared-reference minus intensity
35.963
MPa√mKI = Yσ√(πa); ratio = KI / KIC,declared
A first-pass number, not a code check, certification, or approval. Read the method and its limits below. What this is and is not.
Nearby: Axial response · Beam deflection & reactions · Elastic stability · Solid-shaft torsion
Method
Formula, when it applies, and when it does not
Calculate one Mode-I linear-elastic stress intensity and its ratio to a toughness reference without interpreting crack behavior.
KI = Yσ√(πa); ratio = KI / KIC,declared
When
- Mode-I opening loading
- Declared geometry factor
- Linear-elastic fracture-mechanics arithmetic
- User-entered toughness reference
Don’t
- This is declared-geometry-factor Mode-I linear-elastic fracture-mechanics arithmetic. Stress intensity depends on detailed geometry and loading; this workspace does not infer a factor, establish LEFM applicability, determine fracture or crack growth, predict life, define inspection intervals, select a material, establish safety, or approve a design.