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William B.
William B.
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I have a $2\text{ mm}$ sheet of HDPE at $280-320^{\circ}\text{ F}$. I want to pierce the skin of this sheet with a $2\text{ mm}$-high pin with a surface area of $3.33\text{ mm}^2$. The pin is also made of HDPE and has cooled completely. With the Young's modulus of HDPE being $0.8\text{ GPa}$, how much force do I need to apply to have the cooled HDPE pin reach the molten layer of the HDPE sheet at $280-320\text{ F}$?

UPDATE: I've been told that the pin is supposed completely weld to the layer of HDPE. Based on the melt temp of the HDPE and the starting temp of the pin, I just don't think its possible in the 2 minutes before the material is quenched. I've attempted to figure out the rate of heat transfer, but can't find the thermal contact conductance coefficient, or the thermal contact resistance. Searching online turned up a tool "CoCoE.exe" but was having trouble running the program on my computer.

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I have a $2\text{ mm}$ sheet of HDPE at $280-320^{\circ}\text{ F}$. I want to pierce the skin of this sheet with a $2\text{ mm}$-high pin with a surface area of $3.33\text{ mm}^2$. The pin is also made of HDPE and has cooled completely. With the Young's modulus of HDPE being $0.8\text{ GPa}$, how much force do I need to apply to have the cooled HDPE pin reach the molten layer of the HDPE sheet at $280-320\text{ F}$?

I have a $2\text{ mm}$ sheet of HDPE at $280-320^{\circ}\text{ F}$. I want to pierce the skin of this sheet with a $2\text{ mm}$-high pin with a surface area of $3.33\text{ mm}^2$. The pin is also made of HDPE and has cooled completely. With the Young's modulus of HDPE being $0.8\text{ GPa}$, how much force do I need to apply to have the cooled HDPE pin reach the molten layer of the HDPE sheet at $280-320\text{ F}$?

UPDATE: I've been told that the pin is supposed completely weld to the layer of HDPE. Based on the melt temp of the HDPE and the starting temp of the pin, I just don't think its possible in the 2 minutes before the material is quenched. I've attempted to figure out the rate of heat transfer, but can't find the thermal contact conductance coefficient, or the thermal contact resistance. Searching online turned up a tool "CoCoE.exe" but was having trouble running the program on my computer.

More Descriptive Image

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edit approved Feb 10, 2015 at 11:25
HDE 226868
edit approved Feb 10, 2015 at 11:25
HDE 226868
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How todo I compute the force required to pierce HDPE?

I have a 2mm$2\text{ mm}$ sheet of HDPEHDPE at 280-320F$280-320^{\circ}\text{ F}$. II want to pierce the skin of this sheet with a 2mm high$2\text{ mm}$-high pin with a surface area of 3.33mm^2$3.33\text{ mm}^2$. TheThe pin is also made of HDPE and has cooled completely. WithWith the youngsYoung's modulus of HDPE being 0.8GPa$0.8\text{ GPa}$, how much force do I need to apply to have the cooled HDPE pin reach the molten layer of the HDPE sheet at 280-320F$280-320\text{ F}$?

How to compute force required to pierce HDPE

I have a 2mm sheet of HDPE at 280-320F. I want to pierce the skin of this sheet with a 2mm high pin with a surface area of 3.33mm^2. The pin is also made of HDPE and has cooled completely. With the youngs modulus of HDPE being 0.8GPa, how much force do I need to apply to have the cooled HDPE pin reach the molten layer of the HDPE sheet at 280-320F?

How do I compute the force required to pierce HDPE?

I have a $2\text{ mm}$ sheet of HDPE at $280-320^{\circ}\text{ F}$. I want to pierce the skin of this sheet with a $2\text{ mm}$-high pin with a surface area of $3.33\text{ mm}^2$. The pin is also made of HDPE and has cooled completely. With the Young's modulus of HDPE being $0.8\text{ GPa}$, how much force do I need to apply to have the cooled HDPE pin reach the molten layer of the HDPE sheet at $280-320\text{ F}$?

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William B.
William B.
  • 353
  • 1
  • 6

How to compute force required to pierce HDPE

I have a 2mm sheet of HDPE at 280-320F. I want to pierce the skin of this sheet with a 2mm high pin with a surface area of 3.33mm^2. The pin is also made of HDPE and has cooled completely. With the youngs modulus of HDPE being 0.8GPa, how much force do I need to apply to have the cooled HDPE pin reach the molten layer of the HDPE sheet at 280-320F?