A method of blank shape design based on sensitivity analysis for the non-circular deep drawing process has been proposed.
Samples were run in batches that included double blanks (solvent blank), a method blank, matrix blank (blank serum), standards, QC samples, and unknowns in sequence.
Quality control was monitored using method blanks, PUF blanks, field blanks, lab matrix spikes for all congeners, and surrogate spikes.
A new method of optimal blank shape design using the initial nodal velocity (INOV) has been proposed for the drawings of arbitrary shaped cups.
Through the investigation, the proposed systematic method of optimal blank design is found to be very effective in the design of a deep drawing process.
Quality control was monitored by the use of method blanks, spikes of bovine serum, duplicates of bovine serum spikes or sample duplicates, surrogate spikes, and confirmation of the analytes by second column or GC-MS, as appropriate.
For each batch of 60 samples, four method blanks, a spiked blank, and a pair of matrix-spiked sample/duplicates were processed.
For each batch of 10 samples, 3 method blanks—a spiked blank and a pair of matrix-spiked samples (spiked with 100 ng each of target phthalates) per duplicate were processed.
MS was operated in scan mode (50 550 m/ z) for qualitative analysis, testing the method specificity, screening of blanks, and confirmation of compound identity.
By applying this method of welding on polyethylene blanks, about 70%% of the base material strength is achieved.
