I submitted three sample materials for DMA analysis. Resulting data (frequency, temperature, E', E'', dL, tanD, Ft, time) came out in excel file along with the graphs of all materials from the analyzing software which were also attached inside the excel file in a separate sheet . Upon inspection of the graphs, I noticed that unlike most DMA graphs which presents three smooth curves displaying the storage modulus, loss modulus, and loss tangent, the graphs I received has multiple curves that represent each elements to which I cannot properly interpret.

Furthermore, because I need to make a comparative study of my materials, I am required to plot the same sets of elements into one graph. As I initially plot for the storage modulus, what appeared was three zigzag lines coming to a curve instead of three smooth curves. This same curving zigzag lines were evident also as I plotted for the loss modulus and loss tangent of the sample materials.

Is the excel data and graph I received from the DMA analysis reliable? How do I properly plot the DMA data in excel or, possibly, in another software to achieve desired results? Thank you.

Attached here are the DMA graph of Sample 1, the graph for the storage modulus of Samples 1, 2, & 3, and DMA graph from Lozano-Sánchez, L., Bagudanch, I., Sustaita, A., Iturbe-Ek, J., Elizalde, L., Garcia-Romeu, M., & Elías-Zúñiga, A. (2018). Single-Point Incremental Forming of Two Biocompatible Polymers: An Insight into Their Thermal and Structural Properties. Polymers, 10(4), 391. For your reference.

Scatter with Smooth Lines were used to plot E' (y-axis) and Temperature (x-axis) using Microsoft Excel in the image Storage Modulus of Three Samples.JPG