Description of Individual Course Units
Course Unit CodeCourse Unit TitleType of Course UnitYear of StudySemesterNumber of ECTS Credits
9103075732017Yarn Quality Control TechniquesElective118
Level of Course Unit
Second Cycle
Objectives of the Course
It is aimed to teach the importance of yarn quality control, mechanical properties such as static and dynamic strength of yarns, elongation, irregularity, hairiness, wear, lint generation characteristics of yarns, to evaluate the results of measured physical properties, to teach measurement methods and teaching of measurement devices.
Name of Lecturer(s)
Prof. Dr. Nilgün Özdil- Doç. Dr. Gonca Özçelik Kayseri
Learning Outcomes
1Recognition of fiber properties affecting yarn quality
2Determining of basic physical properties of yarns
3Gaining the ability of the principles of devices used to measure the physical properties of yarns
4Analyzing the results of different measurement methods and to use the obtained data in applications
5Gaining the ability to follow the latest developments in yarn testing field
6Gaining the ability to do research, prepare homework (report) and present it
Mode of Delivery
Face to Face
Prerequisites and co-requisities
Recommended Optional Programme Components
Course Contents
The importance of yarn quality control, sampling principles for yarn analysis and preparation of test plan and statistical evaluation, interaction between fiber and yarn properties, bale management, yarn irregularity theories, methods of irregularity measurement, determination of fault sources, yarn hairiness and measurement methods, friction and abrasion properties of spun yarns, static and dynamic strength and elongation properties of yarns, electrostatic characteristics of yarns, measurement of textured yarn properties, latest developments in yarn testing
Weekly Detailed Course Contents
1The importance of yarn quality control, principles of sampling for yarn analysis, preparation of test plan and statistical evaluation
2Fiber properties affecting yarn properties and bale management
3Yarn unevenness measurement methods Yarn unevenness testing (Uster)
4Evaluation of yarn unevenness measurement results Yarn unevenness testing (Uster)
5Yarn hairiness and measurement methods Yarn hairiness testing (Uster)
6Yarn friction and abrasion Yarn friction and abrasion testing (CTT)
7Mid-term exam
8Lint generation characteristics of yarns Lint generation testing (CTT)
9Tensile and elongation properties of yarns Yarn tensile strength (Zwick)
10Yarn tensile strength in static and dynamic conditions Yarn tensile strength (Zwick- CTT)
11Electrostatic characteristics of yarns
12Measurement of textured yarns properties
13Measurment of synthetic yarns properties
Recommended or Required Reading
V. K. Kothari, Progress in Textiles: Science and Technology, Vol:1 Testing and Quality Management, 1999. Akalın M., Tekstilde Fiziksel Testler, Ders notları, Marmara Üniversitesi Teknik Eğitim Fakültesi Tekstil Eğitimi Bölümü, İstanbul 1994 Okur A., Tekstil Materyallerinde Mukavemet Testleri, Dokuz Eylül Üniversitesi Mühendislik Fakültesi Yayınları No:303, İzmir 2002 Groover E., Hamby D.S., “Handbook of Textile testing and Quality Control” New York: Textile Book Publishers (1960) Bona M., “Textile Quality, Physical Methods of Product and Process Control, Textilia, 1994.Booth J.E., Principles of Textile Testing, Butterwords, 1982. Mehta V.P.”An introduction to Quality Control for the Apparel Industry, ASQC, 1982. B.P. Savilla, Physical Testing of Textiles, The Textile Institute, 1999  Furter R., Strenght and elongation testing of single and ply yarns,The Textile Institute Manual of Textile Technology (1985)  Uster Technologies Special editions katolog vb dökümanlar. CTT (Constant Tension Transport) Manuals  ASTM standards  ISO standards One midterm and one final exam are scheduled at the semester. The year-end success grade will be calculated by taking 50% of the success grade and 50% of the year-end grade.
Planned Learning Activities and Teaching Methods
Assessment Methods and Criteria
Term (or Year) Learning ActivitiesQuantityWeight
Midterm Examination180
End Of Term (or Year) Learning ActivitiesQuantityWeight
Final Examination1100
Term (or Year) Learning Activities50
End Of Term (or Year) Learning Activities50
Language of Instruction
Work Placement(s)
Workload Calculation
ActivitiesNumberTime (hours)Total Work Load (hours)
Midterm Examination122
Final Examination122
Attending Lectures13226
Report Preparation250100
Report Presentation122
Individual Study for Mid term Examination14040
Individual Study for Final Examination15050
Contribution of Learning Outcomes to Programme Outcomes
LO14    3
LO24    3
LO34    3
LO4 34   
LO54    4
LO6   155
* Contribution Level : 1 Very low 2 Low 3 Medium 4 High 5 Very High
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