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Hot-pressed Si3N4has a tensile strength of 550 MPa. Flaws are present due to porosity remaining in...

Hot-pressed Si3N4has a tensile strength of 550 MPa. Flaws are present due to porosity remaining in the part; the radius of curvature of these flaws is determined to be 0.005 cm. The part should be capable of withstanding an applied stress of 200 MPa. What is the maximum length of flaws that can be tolerated?

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