Milad Zeynivandnejad

11 Questions 43 Answers 0 Followers

Questions related from Milad Zeynivandnejad

Does monolithic composites show higher strength toward 3D printed ones?

Hi everyone I want to compare a monolithic polymer composite sample and a 3D-printed polymer composite sample. However, I need some references for this matter. Any contribution would be...

16 December 2022 2,311 7 View

Which parameter or parameters change the mechanical behavior of the same material with two different test specimen sizes(macro and micro size)?

I have done the tensile strength test on two kinds of tensile specimens with the same material, but the mechanical behaviors differ from each other. My considerations are focused on the size...

15 April 2022 4,993 7 View

Do we have to use the 0.2% offset method to calculate the young's modulus of the stress-strain curve of the polymers?

Hi everyone I need an urgent answer about how to calculate the young's modulus of the polymers. any kind of suggestion, guidance will be appreciated. Best regards.

04 July 2021 4,435 3 View

What would be the reasonable crystallinity degree for PLA?

Hello everyone Based on the calculation of the enthalpy peaks of crystallization and melting of the DSC test of the provided PLA sample, the crystallinity degree is 12.2%. I don't know if this...

26 June 2021 8,526 5 View

How many endothermic peaks are in the heating curve of the differential scanning calorimetry test?

Hello everyone I have done a DSC test on the poly-lactic acid by Mettler DSC set-up. As the result shows, there are three endothermic peaks in the red curve that I marked by the black color. It is...

05 June 2021 8,759 9 View

Can the additive material change the structural properties of the polymer matrix in polymer composites?

Hello everyone I use a metal powder as the filler to a thermoplastic polymer matrix. Therefore, I wonder if there are any changes such as the molecular weight distribution, occurring in the...

30 May 2021 7,509 17 View

What are the effects of the Simulated Body Fluid (SBF) corrosion solution on the stress and Elongation of biopolymers?

what are the effects of the Simulated Body Fluid (SBF) corrosion solution on the stress and Elongation of biopolymers? Best regards.

30 April 2021 6,826 3 View

Does the added metal powder into the polymer matrix increase the tensile strength of the composite?

hello everyone In the case of the tensile strength test of 3d printed composite polymer with metal powder reinforcement, by adding the percentage of metal powder to the polymer matrix, is there...

06 April 2021 2,571 28 View

Is there a way to control the distribution of non-continuous fiber in the 3D printed composites?

Hello everyone As we prepared a composite in filament format and print a sample, how could we control the distribution of reinforcement non-continuous fiber or particle on the deposited layer...

19 November 2020 4,197 4 View

How to achive good bonding between printed layer, in the FDM process?

Hello everyone One of the most common defects in 3d printing, especially in the FDM process, is the lack of good bonding between printed layers. therefore, to achieve good bonding between layers,...

01 November 2020 8,247 4 View

How to use the Internal mixer properly?

hello to everyone To use properly from the internal mixer ' Banbury mixer ', there are some specific parameters including Max-Operating Temperature, free volume of mixer chamber(ml), adjustable...

12 July 2020 9,647 0 View