Measuring Flexural Strength
For a rectangular sample under a load in a three-point bending setup (Fig. 3):
- F is the load (force) at the fracture point (N)
- L is the length of the support span (mm)
- b is width (mm)
- d is thickness (mm)
For a rectangular sample under a load in a four-point bending setup where the loading span is one-third of the support span:
- F is the load (force) at the fracture point
- L is the length of the support (outer) span
- b is width
- d is thickness
For the 4 pt bend setup, if the loading span is 1/2 of the support span (i.e. Li = 1/2 L in Fig. 4):
If the loading span is neither 1/3 or 1/2 the support span for the 4 pt bend setup (Fig. 4):
- Li is the length of the loading (inner) span
Read more about this topic: Flexural Strength
Famous quotes containing the words measuring and/or strength:
“Man always made, and still makes, grotesque blunders in selecting and measuring forces, taken at random from the heap, but he never made a mistake in the value he set on the whole, which he symbolized as unity and worshipped as God. To this day, his attitude towards it has never changed, though science can no longer give to force a name.”
—Henry Brooks Adams (18381918)
“When the shadow of death blots out my joy
And erases the face of the sun
Give me strength to endure, hope to believe
That living and dying are one.”
—William L. Wallace (20th century)