| Subject name (in Hungarian, in English) | Composites technology | |||
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Composites technology
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| Neptun code | BMEGEPTBGE1 | |||
| Type | study unit with contact hours | |||
| Course types and number of hours (weekly / semester) | course type: | lecture (theory) | exercise | laboratory excercise |
| number of hours (weekly): | 2 | 0 | 1 | |
| nature (connected / stand-alone): | - | - | coupled | |
| Type of assessments (quality evaluation) | exam | |||
| ECTS | 4 | |||
| Subject coordinator | name: | Dr. Czél Gergely | ||
| post: | research associate | |||
| contact: | czel@pt.bme.hu | |||
| Host organization | Department of Polymer Engineering | |||
| http://www.pt.bme.hu | ||||
| Course homepage | http://www.pt.bme.hu/tantargy.php?id=132&l=a | |||
| Course language | english | |||
| Primary curriculum type | mandatory | |||
| Direct prerequisites | Strong prerequisite | BMEGEPTBG01 | ||
| Weak prerequisite | ||||
| Parallel prerequisite | ||||
| Milestone prerequisite | at least obtained 0 ECTS | |||
| Excluding condition | BMEGEPTBG03, BMEGEPTAGA3, BMEGEPTAGE1 | |||
Aim
The aim of the course is to acquaint students with the components, properties and most important production technologies of composite materials. Because composite materials have a significantly more complex structure and material behaviour than conventional structural materials, the second half of the lecture series deals specifically with the fundamentals of composite mechanics. The concept of layer order and the method of calculating the deformation and stress response of composites to tensile and bending stresses are presented through simple examples.
Learning outcomes
Competences that can be acquired by completing the course
Knowledge
The student knows the definition of polymer composites and their basic structure. Understands the function of reinforcing material and matrix material in polymer composite materials. The student understands the most important applications of polymer composites. The student knows the three most important matrix materials and two most important reinforcing materials of polymer composites. The student knows in detail the nine most significant composite manufacturing technologies. The student knows the typical damage and failure modes and mechanical testing methods of composites. The student systematizes the four most important relevant types of material behaviour. They know the mixing rules for estimating the properties of composite materials. They understand the basic types and design guidelines of composite layer orders. The student knows the mechanical calculations of the tensile and bending loads of composite sheets.
Ability
The student distinguishes between composites and other structural materials. The student distinguishes between the construction of composites and other structural materials. The student is able to decide whether a given product should be made of a composite. They select the matrix and reinforcing materials that can be used for a given product. They select the technologies suitable for the production of the given product. The student separates the failure modes of composites and conventional structural materials. The student is able to decide which type of mechanical behaviour a given material belongs to. They apply mixture rules to estimate the properties of composite materials. The student can perform manual calculations for simple load cases. They suggest a suitable layer order for a given application.
Attitude
The student constantly monitors their work, results, and conclusions. The student expands their knowledge of composite processing technologies through continuous learning. They are open to the use of information technology tools. The student develops accurate and error-free problem solving, engineering precision, and accuracy. The student follows new manufacturing technologies, design and mechanical testing methods in the field of composite materials.
Independence and responsibility
They collaborate with the instructor and fellow students to expand their knowledge. They accept well-founded professional and other criticism. They perform certain tasks without external help. The student makes a responsible, well-founded decision based on their analysis. The student takes responsibility for the manufacturing technology and design proposals they provide.
Teaching methodology
The subject is taught in lectures. The lectures teach the students the information defined by the knowledge and ability competence elements, using frontal education. Some of the lectures are seminar-type lectures, e.g. when the homework is described, and I provide practical guidance on how to solve it. In order to make the presentations more illustrative, the described composite manufacturing technologies are presented with the help of videos also available on the Internet. During the completion of the course, students perform a group task, during which a composite sheet with a given property is designed, manufactured, and subjected to a tensile test. The aim of the group task is to apply the knowledge learned in the lectures in practice and to develop the skills of working in a team.
Support materials
Textbook
Gay D, Hoa SW, Tsai SW: Composite materials: Design and applications. CRC Press. 2003. Boca Raton. ISBN 1-58716-084-6
Kollár LP, Springer GS: Mechanics of composite structures. Cambridge University Press. 2003. Cambridge. ISBN 0-521-80165-6
Lecture notes
Online material
http://www.pt.bme.hu/tantargy.php?id=132&l=a
Validity of the course description
| Start of validity: | 2021. September 1. |
| End of validity: | 2025. August 31. |
General rules
Learning outcomes are assessed through a partial performance assessment and exam. Partial performance assessment is the written examination of the knowledge and ability type competence elements of the subject in a way that requires group work. The exam consists of written and oral parts, covering the assessment of all types of knowledge and skills acquired during the semester. Both parts of the exam will be held on the same day, and the results will be announced on the same day.
Assessment methods
Detailed description of mid-term assessments
| Mid-term assessment No. 1 | ||
| Type: | formative assessment, project-based, complex | |
| Number: | 1 | |
| Purpose, description: | Students are given a group task, the aim of which is to design a composite sheet suitable for a given load, starting from a given selection of materials. The sheets designed must also be prepared by the teams and then subjected to a tensile test. Conclusions should be drawn by comparing the evaluated data with the design results. The solution of the task must be summarized in writing, in the form of a protocol, and submitted at the time of the last presentation. 30% of the total points available for the whole semester, i.e. 30 points, can be awarded for the task. At least 50% of this, i.e. 15 points, must be achieved. The total score is the sum of the points given for the presentation of the project (max. 10 points) and the points for the protocol (max. 20 points). | |
Detailed description of assessments performed during the examination period
Elements of the exam:
| Written partial exam | ||
| Obligation: | mandatory (partial) exam unit, failing the unit results in fail (1) exam result | |
| Description: | The aim of the examination element is to check the acquisition of composite manufacturing technologies and simple calculation methods learned during the semester. The calculation tasks are aimed at determining the deformations and stress states of symmetrical composite plates with a simple geometry, under tensile and bending loads. The highest possible score is 50; successful completion of the exam element requires at least 40%, i.e. 20 points. | |
| Oral partial exam | ||
| Obligation: | (partial) exam unit chosen by the student, the exam result assessed by other partial exam unit can be changed unrestrictedly | |
| Description: | This exam unit is dedicated to the clarification of any points left open after the written part. The student can opt for getting a score proportional to his/her written exam score and skip the oral unit. If the student opts for taking the oral unit, the result of the written exam may change either in a positive or negative direction. At least 40% has to be achieved to pass. The maximum score is 20, the minimum score to pass is 8. | |
| Inclusion of mid-term results | ||
| Obligation: | mandatory (partial) exam unit, failing the unit results in fail (1) exam result | |
| Description: | The score given for the partial assessment (maximum: 30) is taken into account for the final score (maximum: 30+50+20=100) and mark. | |
The weight of mid-term assessments in signing or in final grading
| ID | Proportion |
|---|---|
| Mid-term assessment No. 1 | 100 % |
The condition for signing is that the score obtained in the mid-year assessments is at least 50%.
The weight of partial exams in grade
| Type: | Proportion |
|---|---|
| Written partial exam | 50 % |
| Oral partial exam | 20 % |
| Inclusion of mid-term results | 30 % |
Determination of the grade
| Grade | ECTS | The grade expressed in percents |
|---|---|---|
| very good (5) | Excellent [A] | above 91 % |
| very good (5) | Very Good [B] | 86 % - 91 % |
| good (4) | Good [C] | 71 % - 86 % |
| satisfactory (3) | Satisfactory [D] | 60 % - 71 % |
| sufficient (2) | Pass [E] | 41 % - 60 % |
| insufficient (1) | Fail [F] | below 41 % |
The lower limit specified for each grade already belongs to that grade.
Attendance and participation requirements
Must be present at at least 50% (rounded down) of lectures.
At least 85% of laboratory practices (rounded down) must be actively attended.
Special rules for improving, retaken and replacement
The special rules for improving, retaken and replacement shall be interpreted and applied in conjunction with the general rules of the CoS (TVSZ).
| Can the submitted and accepted partial performance assessments be resubmitted until the end of the replacement period in order to achieve better results? | ||
| NO | ||
| Taking into account the previous result in case of improvement, retaken-improvement: | ||
| new result overrides previous result | ||
| The way of retaking or improving a partial assessment for the first time: | ||
| partial assesment(s) in this group cannot be improved or repeated, the final result is assessed in accordance with Code of Studied 122. § (6) | ||
| Completion of unfinished laboratory exercises: | ||
| missed laboratory practices must be performed in the repeat period | ||
| Repetition of laboratory exercises that performed incorrectly (eg.: mistake in documentation) | ||
| incorrectly performed laboratory practice (e.g. Incomplete/incorrect report) can be corrected by repeating the practice | ||
Study work required to complete the course
| Activity | hours / semester |
|---|---|
| participation in contact classes | 42 |
| preparation for laboratory practices | 14 |
| elaboration of a partial assessment task | 30 |
| exam preparation | 28 |
| altogether | 114 |
Validity of subject requirements
| Start of validity: | 2021. September 1. |
| End of validity: | 2025. August 31. |
Primary course
The primary (main) course of the subject in which it is advertised and to which the competencies are related:
Mechanical engineering
Link to the purpose and (special) compensations of the Regulation KKK
This course aims to improve the following competencies defined in the Regulation KKK:
Knowledge
- Student is familiar with the general and specific mathematical, scientific and social principles, rules, contexts and procedures needed to operate in the field of engineering.
- Student has the knowledge of metrology and measurement theory in the field of mechanical engineering.
- Student has the comprehensive knowledge of the main properties and applications of structural materials used in engineering.
Ability
- Student has the ability to apply the general and specific mathematical, scientific and social principles, rules, relationships and procedures acquired in solving problems in the field of engineering.
- Student has the ability to carry out laboratory testing and analysis of materials used in the engineering field, and to evaluate and document test results.
Attitude
- Student strives to plan and carry out tasks to a high professional standard, either independently or in a team.
- Student is open and receptive to learning, embracing and authentically communicating professional, technological development and innovation in engineering.
Independence and responsibility
- Student acts independently and proactively in solving professional problems.
- Student takes responsibility for the sub-processes under student's management.
Prerequisites for completing the course
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Knowledge type competencies
(a set of prior knowledge, the existence of which is not obligatory, but greatly facilitates the successful completion of the subject) |
none |
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Ability type competencies
(a set of prior abilities and skills, the existence of which is not obligatory, but greatly contributes to the successful completion of the subject) |
none |