Avni YILDIZBAŞ, İsmail ÖZLÜSOYLU, Abdullah İSTEK

Masa Tenisi Raket Tahtası Üretimi ve Özellikleri

1800’lü yılların sonlarında ortaya çıkan masa tenisi pek çok spor dalında olduğu gibi ekipmanların gelişimiylebirlikte değişim ve gelişim göstermiştir. İlk zamanlarda parşömen kaplı uzun saplı raketler ile mantar veya kauçuktoplarla oynanmıştır. 1930’larda sert kauçuk kaplı raketin icadıyla oyun değişmeye başlamış ve kompozitmalzemelerin yaygınlaşmasıyla masa tenisi raketi de değişmiştir. Ahşaptan üretilen raket tahtası tek katmandanoluşabileceği gibi daha çok 3-7 katmandan oluşmaktadır. Raket tahtası ortalama olarak 17 cm uzunluğunda ve 15 cmgenişliğinde üretilmektedir. Ancak üretimlerinde şekil, boyut ve ağırlık yönüyle bir sınırlama olmadığından oyuncularraket tahtalarını oyun tarzlarına göre seçmektedir. Uluslararası Masa Tenisi Federasyonu (ITTF) yönetmeliklerinegöre, raket tahtası kalınlığının en az %85'i ahşaptan oluşmalı ve yüzeyler düz-pürüzsüz ve sert olmalıdır. Darbe emilimenerji değeri yüksek olan ağaç türleri masa tenisi raket tahtası üretimine daha uygundur. Raketin topa çarpmaanında oluşan vibro-akustik özellik ile raket tahtası arasında önemli bir ilişki bulunmaktadır. Masa tenisi raketiüretiminde kullanılacak ahşap malzemenin uygunluğunun belirlenmesinde yoğunluk, çeşitli sertlik dirençleri, basınçmukavemeti, eğilme direnci, darbe emilim enerjisi ve vibro-akustik özellikleri bilinmelidir. Üretiminde Hinoki,Limba, Balsa, Kiri (Paulownia), Dişbudak, Ladin, Ihlamur, Ceviz gibi çeşitli ağaç türleri yaygın olarakkullanılmaktadır.

Anahtar Kelimeler:

Masa tenisi, raket tahtası, kompozit, darbe emilim enerjisi, vibro-akustik, üretim

Table Tennis Blade Production and Features

Table tennis, which emerged in the late 1800s, has changed and developed with equipment development,as in many sports. In the early days, table tennis was played with parchment-covered long-handled rackets and corkor rubber balls. The game started to change with the invention of the hard rubber-coated racket in the 1930s, and thetable tennis racket also changed with the spread of composite materials. A racket blade made of wood can consist ofa single layer, or it mostly consists of 3-7 layers. The racket blade is produced 17 cm long and 15 cm wide on average.However, since there is no limitation in shape, size, and weight in their production, players choose racket bladesaccording to their playing style. According to the International Table Tennis Federation (ITTF) regulations, at least85% of the racket blade thickness must be made of wood, and the surfaces must be smooth and hard. Wood specieswith high impact absorption energy value are more suitable for table tennis blade production. There is an importantrelationship between the vibro-acoustic feature when the racket hits the ball and the racket blade. Density, hardnessresistances, compressive strength, bending resistance, impact absorption energy, vibro-acoustic properties should beknown in determining the suitability of the wood material to be used in the production of table tennis rackets. Varioustree species such as Hinoki, Limba, Balsa, Kiri (Paulownia), Ash, Spruce, Linden, and Walnut are widely used inracket blades production.

Keywords:

Table tennis, racket blade, composite, impact absorption energy, vibro-acoustic, production,

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