Showing 10 results for Bassam
Dr. S.ali Mojabi, Dr. Saeed Shaikhzadeh Najar, Dr. Shahrokh Hosseini Hashemi, Dr. A Rashidi, Dr. S.j Bassam,
Volume 2, Issue 3 (9-2006)
Abstract
In this research, an apparatus was designed and constructed in order to simulate the storage behavior of hand-woven carpet under different environmental conditions. Silk hand-woven carpet (“Gom”) with 115×75 cm dimensions and 102×97 knot per 10 cm was selected and then inserted into the packing simulator with two different laying configurations including flat and folded. The environmental conditions was adjusted at 3 different conditions including 25 ± 5% r.h and 30 ± 2°c (July-Tehran-Dry), 65 ± 5% r.h and 6 ± 2°c (February-Tehran-humid), 40 ± 5% r.h and 19 ± 2°c (October -Tehran-mild). The carpet sample was compressed under constant loads of 135 and 150 kg. The variation of carpet thickness with time in different parts of carpet was continuously measured using data acquisition system. The result of experiment shows that the carpet thickness is suddenly decreased at a short period of time and then reached to a stable condition. The variation trend of carpet thickness with time is accordance with a logarithm equation(y=a×Ln(t)-b) which is highly in agreement with Eyring model proposed in creep theory . But at the dry conditions, the variation of carpet thickness at the folded point follow a non-linear power equation (y=a×(t)^b) with a low correlation coefficient. However, the variation of carpet thickness at the non-folded point and flat configuration is very low.
Generally, at the humidity condition, maximum carpet thickness variation occurred at folded point with folded configuration. On the other hand, carpet thickness variations at dry condition are less those of at humidity and mild conditions. In addition, carpet thickness at dry condition more quickly reached to stable condition than those of at humidity and mild conditions.
Dr Seyyed Ali Mojabi, Dr Saeed Sheikzadeh Najjar, Dr Shahrokh Hosseini Hashemi, Dr Seyyed Jalal-O-Din Bassam,
Volume 5, Issue 13 (9-2009)
Abstract
To study the way of folding handmade carpets, the selected sample has been put under pressure of 50g/cm2 weight at three different states. The pressure has increased uniformly and continuously at 100,200, 500, 1000 and 1500 g/cm2. The thickness of the carpet has been recorded continuously during the measurement of the thickness of the carpet sample. The pressing parameters of the carpet have been calculated in KES-F system with simulation and fitting of two components model of de-jong pressure. Also, the thickness of the part that is not able to be pressed is estimated. Based on the obtained results, it has been shown that pressing energy in the curved folded part of the carpet is very low, but the pressing energy in the part with two layers of the carpet on each other is very high. Nevertheless, the percentage of elasticity in two layers of the carpet placed on each other is remarkably low. It shows that the sensitivity and flexibility of this area is more in comparison with two layers of the carpet. On the other hand, the thickness of the part that is not able to be pressed in the area with two layers of the carpet on each other is more than that of the investigated areas. In this way, the pressing is carried out by piercing the upper naps on the lower ones. Without folding and flatting of the carpet, it is not pressed and just upper layer naps are pressed on the lower layers. In this study, the phenomenon of Domino folding is used to describe the folding behavior of the handmade carpet under static pressing
Dr Seyed Jalal Eddin Bassam, Mr Mohsen Hamidi, Mrs Beheshteh Nasiri Rad,
Volume 6, Issue 15 (6-2010)
Abstract
Symmetric and asymmetric knots, as two original knots, possess different physical and mechanical properties that influence the function of a carpet. Jufti and U knots give different properties to the carpet compared to the original ones. If they were used to produce specific properties, they would enhance the carpet's quality. However, nowadays their applications are considered as methods that diminishes the quality of carpets. As these properties have significant influence on the carpets, some attention is paid to them in different papers and textbooks. Carpet samples are woven with each knot type and identical materials by a weaver. Then the effect of various kinds of knots measured on the carpet length, carpet thickness and pile height. Samples are woven in two different methods. The first one is a method in which the number of beating the comb is controlled; i.e., after each row of knots only and exactly two comb beats are applied to the row of knots. In the second method, the dimensions of samples were controlled and it is tried to weave the carpet with the dimensions designed; i.e., the number of times the comb is beating down the row of knots varies according to the weaving progress. In jufti and U knot samples, the number of beating times inevitably reduced to one, while in symmetric and asymmetric samples it increased to five to six times to obtain the designed dimensions. Results show that symmetric and asymmetric knots lead to an increase in the carpet length, whereas the other two knot types end in a decrease in the carpet length. To reach the designed length it is necessary to change the number of beating or to use different materials with suitable yarn counts. The thickness of the foundation of carpet is also influenced by the knot type; i.e., if the number of comb beating increases the foundation thickness increases as well, but if the number of comb beating remains constant there will be identical foundation thickness in carpets woven with different types of knots.
Dr Seyed Ali Mojabi, Dr Saeed Shaikhzadeh, Dr Shahrokh Hosseini Hashemi, Dr Seyed Jalal Eddin Bassam,
Volume 6, Issue 16 (9-2010)
Abstract
If a carpet is put under pressure during use or storage, its thickness decreases instantly and continues to decrease slowly as the pressure is not removed. Some part of this loss of thickness is not recoverable. This phenomenon is called creep and is influenced by parameters such as temperature and humidity, and it may cause breakage, burst, crease, bump, and folding line in the carpet. By studying creep of carpets, it is possible to predict their behavior under such loads to reduce the damages and effects of the creep. In this paper, a sample of folded–carpet is put under pressure of a 170 kg dead weight for 48 hours and its compression strain under various thermal and humidity condition is measured on-line. Then different statistical models were regressed on the collated data proving that creep-model of Voight-Kelvin is assumed as the best formula for determination of creep behavior of the folded carpet under different thermal and humidity conditions. Analysis of data variance detected a significant difference between various levels of thermal and humidity parameters in creep model implying their direct influence in the equation, although they are negligible compared to time effect. This research extended to calculate the Young modulus, creep constant and viscosity coefficient of the folded-carpet.
Dr Seyed Jalal Eddin Bassam, Mr Mohsen Hamidi, Mrs Beheshteh Nasiri Rad,
Volume 6, Issue 16 (9-2010)
Abstract
In this paper, the specimens woven by the same weaver with identical materials but with four different types of knots, i.e., symmetrical, asymmetrical, jufti and U knots, which their details are given in a previous paper by these authors, are used. The effect of these knots on such physical properties as width of the weave, length of the motifs, length of yarn in a knot and the carpet weight are measured. The woven samples are produced in two different methods. Resulrs show that the width of jufti and U knot samples were reduced after cutting off the loom, while the change in the width of the other two is little. The change in the length of motifs depends on the change in the carpet length, i.e., in samples with change in carpet length, the motifs length change as well and in cases that there are little change or no change in the carpet length, accordingly no change or little change is observed in the motifs. In the meantime, by subjective investigation of shapes of motifs in the four different knots, the change in their details and the sharpness of the lines and curves in them are studied. The results of computation of the ratio of the wool yarn to cotton yarn demonstrates that in symmetric and asymmetric samples more than two third of the carpet weight is built up by wool yarns, so that it is predicted that they have better mechanical function compared with other knots. Jufti sample has the lowest ratio of wool to cotton yarn, so it would show the worst mechanical performance.
Mr Seyed Mohammad Mehdi Mirzaamini, Dr Seyyed Jalal Eddin Bassam,
Volume 7, Issue 18 (6-2011)
Abstract
Among various Persian carpet designs, medallion and medallion with spandrels designs have special status due to their both aesthetic and frequency of use in carpets. It seems that the medallion in Persian carpet has not achieved this significance only for its aesthetic aspects. In this paper, the significance of this pattern is investigated from symbolic point of view using library-based survey and content analysis. Medallion in the carpet has reached such maturity and aesthetic climax from both conceptual and appearance aspects that this can hardly be seen in other arts. Medallion pattern has developed from mythical beliefs and it symbolizes garden and pool; but its evolution to today's state is in fact the manifestation of the beliefs, thoughts and dreams of the Iranian Muslim artists that are manifested in a heavenly garden and spiritual space. On the other hand, visualizing heavenly concepts in the medallion departs from mortal and earthly state, and seeks introducing a holy space by using abstract patterns. In this way, an eternal world, which cannot be depicted in any mortal form, is portrayed by applying a symbolic rendition. For realizing all of its connotations, the designer and/or weaver chooses the center of the carpet to stimulate this prominent concept.
Mr Mohammad Reza Shahparvari, Dr Seyed Jalal-Eddin Bassam,
Volume 7, Issue 19 (9-2011)
Abstract
Every year, during rose water extraction a huge amount of damask rose residue is produced. The transportation and disposal of these waste materials create some problems including an increase in the price of the produced rose water. In this study the use of damask rose residues in dyeing wool is assessed and a method for its use as a colorant in natural dyeing is offered. Dyeing was carried out by using the material along with some mordants such as alum, copper sulphate, iron sulphate, chlorine and tin and also without mordant by adopting pre-mordanting technique. Various amounts of mordants and colorants were used. Comparing the obtained color hue with those from other traditional colorants, it was observed that the color hue obtained from damask rose residues was greatly similar to the color hue gained from pomegranate peel. These two color hues were analyzed and compared using the carpet weavers’ views as well as measuring wash and light fastness properties using experimental methods. The results indicate that damask residues can be used as a new natural colorant particularly in carpet production. This can provide a new colorant with minimum expenses, reduce the price of rose water extraction, and prevent environmental pollution.
Mrs Najmeh Mirzakarimi Isfahani, Dr. Seyed Jalal-Eldin Bassam, Mr Javad Hassanpoor Nami,
Volume 10, Issue 26 (3-2015)
Abstract
Diversity in the design of hand-knotted carpet may satisfy different tastes in the market as well as cause a boost in the purchase of the product. Isfahan hand-knotted carpet has a unique quality and originality in its design, but these characteristics are almost solely well-known in Isfahan market, so that in the national level, most buyers of Isfahan carpet comprises of Isfahani people. In the current state of affairs bearing the sanctions in the mind, preservation and promotion of Isfahan carpet is of great importance to support the weavers and employees of this industry and to improve their welfare as well as continuation of this national art. In this paper, the hypothesis is that the design of Isfahan carpet suffers from lack of diversity in such a way that it acts as a hurdle in the promotion of the carpet market. To examine this hypothesis, 152 questionnaires were distributed in Isfahan and Tehran carpet markets. Also some questionnaires were filled by Isfahani entrepreneurs and designers of carpets. Sampling was done according to Convenience Sampling method and the answers to the questionnaires were analyzed by the inferential and descriptive statistical analyses. The results demonstrate that if customers would have more favorable attitudes towards Isfahan carpet, the purchasing motivation would increase. Also lack of organized marketing strategy and insufficiency of potent designers are among the factors snagging diversity in the design of Isfahan carpet.
Mrs Somayeh Abdi, Phd Seyed Jalal Eddin Bassam, Mr Abdollah Mirzaei,
Volume 11, Issue 27 (9-2015)
Abstract
Ahar is one of the carpet weaving regions in Eastern Azerbaijan. This paper is to document the designs of carpets of this area. Data is collected through surveying, using methods of observation and interviewing weavers, merchants and scholars. Six carpet designs of six villages of this area including Qunigh, Cheshme Vazan, Qurchi Kandy, Haj Abedin Mazre'eh, Kaghalagh and Kalhur are studied and analyzed. The composition found in village carpets of Ahar is rectilinear medallion-spandrel. The carpets follow a pattern and design, which have some similarities, since the villages are in a same vicinity. But they not only differ in general design, but also they are different in some motifs. At the end, the elements of the design; i.e. medallion, pendant, spandrel and borders of these six carpets are compared.
Mohammadreza Shahparvari , Dr Jalaledin Bassam ,
Volume 12, Issue 29 (9-2016)
Abstract
Carpet is one of the Iranian arts that is shaped in direct interaction with designers and weavers and therefore is a visual expression of their beliefs and ideas. This statement of beliefs, originates from the artist’s mentality influenced by culture, customs and religious teachings of society which is then traced on the vertexes of the carpet in different arrays and in the form of various designs. For this reason, various issues have been incorporated in carpet with a symbolic expression and each imply a cultural and religious concept. In the mist of this, numbers have a deep root in the culture of this country and was divided into two types: quantitative and qualitative. Qualitative aspect, or in other words, the symbolic and meaningful dimension of numbers has long been in consideration and the application of numbers in the arts of this country can be considered as a sign of the grand position of the symbolic aspect of numbers in different eras.
This article reviews the place and symbolic use of numbers in carpet with analytical method and library data collection. The results show that the numbers one, three, four, five, six, seven and eight have been symbolically used in different carpet designs. This application implies that the organization of images and designs has been based on the symbolic meanings of these numbers. Furthermore, it can be been seen that some carpet patterns and designs have been named based on their numerical format, thus strengthening the role of numbers in carpet and conveying the symbolic meaning they possess. These patterns, which are influenced by the cultural and religious teachings of the society, have been employed by designers and weavers and have been the source of inspiration for their designs.
