Kompozit Levhalar için Ankastre-Tip Eğilmeli, Çok Numuneli Yorulma Test Makinesinin Geliştirilmesi

Year 2018, Volume: 8 Issue: 1, 1 - 17, 31.01.2018

H Ersen Balcıoğlu , Raif Sakin Akif Dumanay Halit Gün

https://doi.org/10.17714/gumusfenbil.304488

Cited By: 1

Abstract

Bu çalışmada, fiber takviyeli kompozit levhalar,
ahşap levhalar, plastik esaslı levhalar ve hafif metalik levhaların eğilmeli
yorulma davranışlarını karakterize eden özgün bir yorulma test makinesi
geliştirilmiştir. Geliştirilen özel bilgisayar yazılımı ile kontrol edilebilen
ankastre-tip eğilmeli test makinesi, yorulma testi için deplasman kontrol
metodunu kullanmaktadır. Yorulma testleri uzun süren mekanik testlerdendir.
Geliştirilen test makinesi aynı anda 10 numuneyi test edebilme özelliği sayesinde
zamandan ve enerjiden tasarruf edilebilmektedir. Yazılım ara yüzü üzerinden
yapılacak basit veri girişleri ile farklı sehim oranları (R) ve 0.1-10 Hz
frekans altında yorulma testleri yapılabilmektedir. Her bir numune için test
zamanı, test frekansı, eğme kuvveti, rijitlik kaybı, yük tekrar sayısı gibi parametreler
hem yazılım ara yüzünden hem de internet üzerinden izlenebilmektedir ve
müdahale edilebilmektedir. Numunelerinden herhangi biri hasara uğradığında
araştırmacının e-postasına uyarı mesajı ve ilgili test verilerini
gönderebilmektedir. Performans ve kalibrasyon için yapılan eğilme testlerinden
elde edilen sonuçların, literatürdeki benzerleri ile uyumlu olduğu
gözlemlenmiştir.

Keywords

Ankastre tip eğilmeli yorulma, Çok numuneli test makinesi, Kompozit levha, Sehim-kontrollü yorulma

Development of Fixed-End Type, multi-Sample Flexural Fatique Test Systems for Composite Plates

Abstract

In this study, a unique fatigue testing machine, which characterizes the
flexural fatigue behavior of fiber-reinforced composite plates, wooden plates,
plastic-based plates and light metal plates, has been developed. Fixed-end type
flexural fatigue test machine, which can be controlled by developed special
computer software, uses displacement control method for fatigue tests. Fatigue
tests are long-running mechanical tests. The developed fatigue test machine can
save time and energy under favor of the ability to test 10  samples simultaneously. Fatigue tests can be
performed under different displacement rates (R) and 0,1-1Hz frequency with
simple data entries via the software interface. 
All parameters such as test time, test frequency, bending force, loss of
stiffness, load repetition for each sample can be monitored and controlled both
in software interface and on internet. If any of the specimens are damaged, a
warning message is sent to the investigator's e-mail along with the relevant
test data. It has been observed that the results, which were obtained from the
bending tests performing for performance and calibration, are consistent with
those in the literature.

Keywords

Fixed-end type flexural fatigue, Multi-sample testing machine, Composite plates, Displacement-controlled fatigue

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