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Recent questions tagged metrology-and-inspection

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In an interchangeable assembly, shafts of size $25.000^{+0.040 \\ -0.010} \: mm$ mate with holes of size $25.000^{+0.030 \\ +0.020} \: mm$. The maximum interface (in microns) in the assembly is $40$ $30$ $20$ $10$
asked Mar 20, 2018 in Metrology and Inspection Andrijana3306 1.5k points
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A machine component made of a ductile material is subjected to a variable loading with $\sigma _{\text{min}}=-50$ MPa and $\sigma _{\text{max}}=-50$ MPa. If the corrected endurance limit and the yield strength for the material are $\sigma '_{e}=100$ MPa and $\sigma _{y}=300$ MPa, respectively, the factor of safety is ________.
asked Feb 27, 2017 in Materials, Manufacturing and Industrial Engineering Arjun 24.6k points
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An inverted U-tube manometer is used to measure the pressure difference between two pipes $A$ and $B$ ,as shown in figure.pipe $A$ is carrying oil (specific gravity$=0.8$ ) and pipe $B$ is carrying water.The densities of air and water are $1.16 kg/m^3$ and $1000\: kg/m^3$,respectively.The pressure difference between pipes $A$ and $B$ is ________$kPa$. Acceleration due to gravity $g =10\:m/s^2$.
asked Feb 24, 2017 in Materials, Manufacturing and Industrial Engineering Arjun 24.6k points
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In the assembly shown below, the part dimensions are: $L_1 = 22.0^{\pm 0.01} \: mm$, $L_2 = L_3$ = $10.0^{\pm 0.005} \: mm$. Assuming the normal distribution of part dimensions, the dimension $L_4$ in $mm$ for assembly condition would be: $2 .0^{\pm 0.008}$ $2 .0^{\pm 0.012}$ $2 .0^{\pm 0.016}$ $2 .0^{\pm 0.020}$
asked Feb 24, 2017 in Materials, Manufacturing and Industrial Engineering Arjun 24.6k points
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Holes of diameter $25.0^{{+0.020} \\ {+0.040}}$ $mm$ are assembled interchangeably with the pins of diameter $25.0^{{+0.008}\\{+0.005}}$ $mm$. The minimum clearance in the assembly will be $0.048$ $mm$ $0.015$ $mm$ $0.005$ $mm$ $0.008$ $mm$
asked Feb 24, 2017 in Materials, Manufacturing and Industrial Engineering Arjun 24.6k points
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A GO-No GO plug gauge is to be designed for measuring a hole of nominal diameter $25$ $mm$ with a hole tolerance of $\pm 0.015$ $mm$. Considering $10 \%$ of work tolerance to be the gauge tolerance and no wear condition, the dimension (in $mm$) of the GO plug gauge as per the unilateral tolerance system is ... $25.015^{+0.000 \\ -0.006 }$ $24.985^{+0.03 \\ -0.03}$ $24.985^{+0.003 \\ -0.000}$
asked Feb 19, 2017 in Materials, Manufacturing and Industrial Engineering Arjun 24.6k points
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Cylindrical pins of $25^{\begin{Bmatrix} +0.020\\ +0.010 \end{Bmatrix}$}$ $mm$ diameter are electroplated in a shop. Thickness of the plating is $30^{\pm 2.0}$ $micron$. Neglecting gage tolerances, the size of the $GO$ gage in $mm$ to inspect the plated components is $25.042$ $25.052$ $25.074$ $25.084$
asked Feb 19, 2017 in Metrology and Inspection piyag476 1.4k points
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