Whenworking with wool fiber, two of the most key factors or propertiesare the wool diameter and length. This is due to the idea that, theyare used during the determination of the processing route not tomention the eventual quality of the wool that has its destination astextile industry (5). However, it should be noted that, a change inthe wool diameter has an effect on the processing process of the wool(7 13). There are different factors that are used to differentiateor describe changes in fiber diameter such as fiber diameter profile.The changes can be across or along the staple as well as at thelocations of both minima and maxima diameter. The knowledge of asingle diameter, abbreviated as (SfFDP’s)turns out to be key towards the development of mechanical modelsrelated to strength of the staple (10). With reference to (StFDP’s),it has been possible to perform extensive analysis into the fiberdiameter profiles. This has been in relation to farm management,processing performance as well as the strength of the staple (9 144 12 11 16). Nevertheless, thorough investigations haven’t beenconducted with reference to fiber properties and diameter profilesthe fiber diameter profiles (single).
Withthe fiber diameter being a key factor in determining its quality,there has been different technologies invented that can be used tomeasure the diameter profile (8 14 2). One such technology is ‘TheOptical Fiber Diameter Analyzer 2000,which has been used when testing for StFDP’s. In addition, thetechnology is also available for on farm testing (2 17). On theother hand, the testing as described by Hansford has been useful instudy projects/purposes (4). Despite their use, the techniques havesome limitations which are that, the diameter can only be measured atone direction, and in turn becoming impossible for one to locate themeasured thickness profile of a specific fiber inside a staple. Thisis contrary to the ‘Single-Fiber-Analyzer’ which can be appliedin the process of measuring the SfFDP’seven in a slight pre-tension force. More so, it can also give tensileproperties of a definite fiber if need be (14).
Focusingon the SIFAN, there is the SIFAN3001 model which is has the abilityto measure SfFDP’salongside a specified fiber at one direction, through concurrentlyrevolving the upper and lower fastens (clamps). This in turn resultsto the ability for one to evaluate fiber ellipticity along itslength. This paper entails report on an analysis investigating theassociation between StFDP’s and SfDFP’s.Using the ‘SIFAN3001 apparatus’, which apparently is the onlyavailable technique, test for SfFDP’s,was conducted on a single direction for solitary wool fiber. Thefibers used in the process were sampled from the sheep (mid sides).This means that, the combined mean for single fiber profiles‘ASfFDP’s’that is drawn for analysis at one orientation was cautiouslyinspected. This was for the mid-sized samples which were drawn frommerino flocks in Australia. In addition, there was mean estimationfor the MFD (MeanFiber Diameter)for the case of exactness when it come the measurements. More so, thecircularity of the taken wool was assessed using the obtained data inthe measurement
Fromthe mod side of the merino, greasy staples were chosen and taken.First, the obtained staples were cleaned, using non-iconic detergentand alcohol. Then it was conditioned in an STP environment (temp at20±2°C, and humidity at 65%±3%). Once this was done, fifty fiberswere sampled from the base of every staple. This was to be used inthe fiber testing process. In order to ensure the fibre were ready,they were further prepared. This was done for each a time on a A4size film that was transparent. Refer Fig 1. The base end hand afixed length of 10mm. later, every single fiber specimen used wasphysically de-crimped with its full length recorded. The distancebetween the fibre Tip and the Base were calculated and were denotedby letter ‘D’. It was taken as the staple length subtracting20mm. in order to make it simple for the preparation process, thesame was done with ‘D’ for the rest of the fibers used.
Afterhaving 10 fibers fixed on the transparent film, the tip which werefixed and the base were every one of them covered using an adhesivetape. Then, the fixed fibers on the film were cut into a square shapewhich was estimated to be 8mm which was focused on facilitating theirmounting to the claps of SIFAN3001.
2.2Testing design and data processing
Forevery fiber scanned, its SfFDP’swas recorded respectively using the SIFAN3001, clamps and CCD cameranot forgetting the diagram for scanning as it is the case in Figure2. The fiber to be analyzed fast is first decrimped under the 1cNpre-tension force, which was followed by the undertaking of thescanning process. The process was done alongside the target fiber.The process was conducted at an estimated speed of 8 millimeter persec.
Theprimary data recorded with regard to diameter, were smoothed firstthrough moving of 5 diameter results. This is done in order toconfiscate bogus recordings from the process. Afterwards, for everyfiber whose width is taken, the diameter from which the scanned endwas attained through averaging the 4 measurement that were generatedat one direction/orientation. Next, every staple, the averagediameter for the fiber from every scanned point was recorded by theprocess of averaging 50 fibers drawn from every single staple.Lastly, the value obtained was confined for an average of incrementswith a range of 5mm (intervals of 5mm).
Soas to undertake the comparison of the ASfFDP’s and the staple drawnfrom every flock, the width of the fiber drawn from every point onthe ASfFDP’swas normalized using the mean value diameter. The “%D” was a wayto identify the alteration in percentage in relation to the meandiameter of the fibre. In the meantime, the measurement which wasscanned from the end to the tip and was similarly subjected tonormalization through mean decrimped fiber measurement. On the otherhand, “%L” represented the essence of denoting the percentage ofthe length from the tip. This is due to the fact that, SIFAN has theinability to assess the full length of the chosen fiber. The SfFDPwas drawn specifically over the tested measurement of the fibre. Thefigure 3 is a representation of the design for trial and the processof data analysis.
3.Results and discussion
3.1Average of single fiber diameter profiles (ASfFDP’s)of staples
Throughthe combination of specific SfFDP’sin accordance to the procedure that is given in the section 2.2above, the ASfFDP’swas identified. The fig.4 is used to show the ASfFDPplotting for the 3 flocks used in the analysis. With reference tothis discussion, the use of SfFDP’sas given by ‘SIFAN3001’ and ‘StFDP’s’ by OFDA2000 was pastthe scope of the paper. Figure 4 is an ideal representation oftypical features of ‘ASfFDP’s’for every each flock used.
Comparingthe Flock H staple, it had the same ASfFDP’s,particularly running to the tip from the middle. On the other hand,the diameters were found to be finer compared to the mean value.However, from the center all the way to the base, the widths werenoted to be wider or broader than average. The largeness of thepercentage D at both the tip vs. the base can be said to be at thesame level as represented in the (figure (a)). Both the maxima andminima diameters appeared in the phases between the staples.
FlockT and B revealed differing characters when subjected to ‘ASfFDP’s’.This is unlike the behavior of ‘H’ in both cases, the diameters(tip to middle) was wider compared to the mean record. However,middle to base, the widths were found to be finer with reference tothe mean. The largeness percentage ‘D’ for the ‘Flock B’ wasrecorded to be lesser compared to ‘Flock T’. Moreover, the minimaand maxima width looked to be somewhat out of point between thestaples (Figures 4 (b) & (c)).