Multipoint forming using hole-type rubber punch

Reconfigurable multipoint forming is a flexible sheet forming technique aimed at customised sheet metal products. However, one drawback of multipoint forming is the cost and time needed to set up and align the upper and lower pin matrices. This study introduces an optimisation study of a novel hole-type rubber punch replacing the top pin matrix of multipoint incremental forming, aiming to reduce pins setting up and alignment complexity and time. Finite element modelling and design of experiments were used to in-vestigate the effect of hole-type rubber punch configuration such as hole size, hole type, and the compres-sion ratio on the wrinkling, thickness variation, and shape deviation. This research shows that the most significant process parameter in all responses was the hole size. The compression ratio of the material was found to be insignificant in wrinkling and shape deviation. The hole-type rubber punch parameters were found to be a hole size of 9 mm, circular hole type, and a compression ratio of 75%. This experimentally resulted in an improved parts wrinkling of 80%, when compared to using solid rubber punch, with the added benefits of reduction of the cost and time needed to set up and align the pin matrices

Optimization of energy consumption in cotton ginning enterprises using neural network method

In the modern world, energy consumption optimization has become a critical concern across various industries due to environmental considerations and economic efficiency. Cotton ginning enterprises, which play a pivotal role in the textile supply chain, are no exception. This article explores applying neural network methods to optimize energy consumption in cotton ginning enterprises. We delve into the challenges faced by the industry, introduce the concept of neural networks, and discuss their potential to enhance energy efficiency. A case study demonstrates the practical implementation of the neural network approach in a cotton ginning setting, showcasing the potential benefits and providing insights into future directions for sustainable energy practices

Вплив L-карнітину на показники ендотеліальної дисфункції і фактори запалення в пацієнтів із гострим інфарктом міокарда без зубця Q

Aim: To evaluate the influence of L-carnitine on inflammatory markers and indicators of endothelial function in patients with acute myocardial infarction without the Q wave.Materials and Methods: 40 patients with verified diagnosis of AMI without Q-wave. All the patients were matched by sex, age, weight and duration of the underlying disease. The patients were randomized into 2 groups. The first group ofpatients were on a standard basic therapy and additionally administered L- carnitine at a dose 5g/day, II- group consisted of patients who did not receive drugs with metabolic action. In dynamics (on the 1st and 10th day of the treatment) the parameters of endothelium vasodilation and markers of inflammation were evaluated.Results: On the background of the basic therapy in both groups an improvement in endothelial function resulting in an increase of brachial artery diameter was observed. However, the L- carnitine vasodilator effect was more pronounced and persistent as compared to group II. In the dynamics, CRP levels and plasma fibrinogen were more pronounced in the Ist group.С целью оценки влияния L-карнитина на маркеры воспаления и показатели эндотелиальной функции у пациентов с острым инфарктом миокарда(ОИМ) без зубца Q обследовано 40 пациентов с соответствующим диагнозом. Выявлен более выраженный вазодилатирующий эффект в группе L-карнитина с параллельным снижением уровня маркеров системного воспаления. З метою оцінки впливу L-карнітину на маркери запалення та показники ендотеліальної функції в пацієнтів із гострим інфарктом міокарда(ГІМ) без зубця Q обстежено 40 пацієнтів з відповідним діагнозом. Виявлений більш виражений вазодилатуючий ефект у групі L-карнітину з паралельним зниженням рівня маркерів системного запалення

Multipoint Forming Using Hole-Type Rubber Punch

Reconfigurable multipoint forming is a flexible sheet forming technique aimed at customised sheet metal products. However, one drawback of multipoint forming is the cost and time needed to set up and align the upper and lower pin matrices. This study introduces an optimisation study of a novel hole-type rubber punch replacing the top pin matrix of multipoint incremental forming, aiming to reduce pins setting up and alignment complexity and time. Finite element modelling and design of experiments were used to investigate the effect of hole-type rubber punch configuration such as hole size, hole type, and the compression ratio on the wrinkling, thickness variation, and shape deviation. This research shows that the most significant process parameter in all responses was the hole size. The compression ratio of the material was found to be insignificant in wrinkling and shape deviation. The hole-type rubber punch parameters were found to be a hole size of 9 mm, circular hole type, and a compression ratio of 75%. This experimentally resulted in an improved parts wrinkling of 80%, when compared to using solid rubber punch, with the added benefits of reduction of the cost and time needed to set up and align the pin matrices