Zastempowski Marcin, Bochat Andrzej, Janiec Maciej
Faculty of Mechanical Engineering, Bydgoszcz University of Science and Technology, Al. Prof. S. Kaliskiego 7, 85-796 Bydgoszcz, Poland.
SORIMEX sp. z o.o., ul. Równinna 25, 87-100 Toruń, Poland.
Materials (Basel). 2025 Jun 27;18(13):3049. doi: 10.3390/ma18133049.
The aim of this study was to examine the functional characteristics of the process of cutting surgical gauze with a drum cutting unit. For this purpose, the authors designed and constructed a test stand on which experimental tests were conducted. As part of this study, the results of the experimental tests are presented, which were conducted for three selected thicknesses of surgical gauze samples, four selected angles of feeding of the material to be cut and nine selected cutting speeds. In order to determine cutting resistance, the specific cutting resistance was used, and the energy consumption was estimated using the specific cutting work related to the cutting surface of the surgical gauze. The conducted experimental studies demonstrated that the highest value of the specific cutting resistance pc=78.14 N⋅m-1 occurred during the cutting of eight-layer gauze at a cutting angle α=0° and a cutting speed Vc=0.66 m⋅s-1. Meanwhile, the highest value of the specific cutting work was approximately LjS=120.00 J⋅m-2 during the cutting of three-layer gauze, also at a cutting speed Vc=0.66 m⋅s-1 for cutting angles α=0° and α=5°. This study found that Vc=0.66 m⋅s-1 is the threshold cutting speed at which the material is cut. Below this speed, the cutting drum does not have enough momentum to cut the material. Based on the statistical analysis of the obtained test results, it was concluded that there exists a relationship between the independent and dependent variables. The cutting speed has the greatest impact on the parameters of the surgical gauze cutting process. The test results, which have not been found in the worldwide literature to date, constitute a valuable contribution to the development of the theory of surgical gauze cutting. The experimentally determined specific cutting resistance p and specific cutting work of surgical gauze broaden the knowledge of the materials used in medicine and contribute to the expansion of scientific knowledge in this field.
本研究的目的是检验使用滚筒切割装置切割手术纱布过程的功能特性。为此，作者设计并搭建了一个试验台，并在其上进行了实验测试。作为本研究的一部分，展示了针对三种选定厚度的手术纱布样本、四种选定的待切割材料进给角度以及九种选定的切割速度所进行的实验测试结果。为了确定切割阻力，使用了比切割阻力，并通过与手术纱布切割表面相关的比切割功来估算能量消耗。所进行的实验研究表明，在切割角度α = 0°、切割速度Vc = 0.66 m·s⁻¹ 切割八层纱布时，比切割阻力pc的最高值为78.14 N·m⁻¹。同时，在切割三层纱布时，比切割功的最高值约为LjS = 120.00 J·m⁻²，同样是在切割速度Vc = 0.66 m·s⁻¹、切割角度α = 0°和α = 5°时。本研究发现Vc = 0.66 m·s⁻¹ 是切割材料的临界切割速度。低于此速度，切割滚筒没有足够的动量来切割材料。基于对所得测试结果的统计分析，得出自变量和因变量之间存在关系的结论。切割速度对手术纱布切割过程的参数影响最大。这些测试结果在迄今为止的全球文献中尚未发现，对手术纱布切割理论的发展做出了宝贵贡献。通过实验确定的手术纱布比切割阻力p和比切割功拓宽了对医学所用材料的认识，并有助于扩展该领域的科学知识。
