Advanced Design and Fabrication of Islamic Tile Ceramic Wall Tiles With Indonesian Batik Patterns Using Artistic CAD/CAM and 3D Printing Technology

The ceramic tile wall is a decorative element used inside restaurants, museums, hotels, aristocratic residences, and places of worship. It plays a critical role in the development of a structure with strong personality and unique qualities by providing relief patterns specific to history or era. The demand for distinctive ornamental wall ceramics that can be mass produced with precision and accuracy has been a challenge for numerous ceramic enterprises in Indonesia, which have historically relied on the skills of artistic professionals in a handmaking process. The purpose of this research was therefore to develop and apply a ceramic tile design process that integrates computer design and fabrication methods with traditional ceramic production techniques. Using the ArtCAM 2015R2 software, photos of batik and Islamic themes were effectively converted into a 2.5D computer-aided design model. Additive manufacturing technology was then used in conjunction with Objet30 Pro 3D printer to precisely produce master molds with Islamic nuances such as puzzle and floral patterns, then conventional ceramic fabrication technology was employed to produce ceramic tiles using these molds. By combining computer-aided design and rapid prototyping technologies, a variety of exact and detailed Islamic decorative ceramic wall tiles were produced with dimensional accuracies within 2.00 mm. Furthermore, the proposed approach demonstrated a 90% reduction in design-to-production time from to 10–12 months to roughly 1–1.5 months.


INTRODUCTION
Ceramics are clay-based materials that are commonly prepared from powders and subsequently fabricated using the sintering (firing) process. Ceramic products have long been produced in many countries, and their designs and artistic qualities are typically influenced by the local history and culture. In general, the ceramic art and design process forms clay and ceramic materials into artistic 2006). The availability of data in a 3D format (Funkhouser et al., 2003) has resulted in the development of 3D replicas into a dynamic exploration of innovative modeling and recovery methods, particularly in ceramic floor tile production.
Additionally, the CAD approach can generate 2D trajectories and 2.5-D prototypes of a product or element. This simplifies and accelerates the process of creating and modifying images while performing numerous design tasks (Fergiawan et al., 2020). Thus, CAD data can be utilized to easily determine the dimensions, surfaces, and masses of the objects to be fabricated. Moreover, CAD prototypes can undergo numerous model changes to meet demanding simulations of physical properties and functions before being converted into manufactured goods (Anggoro P. W. et al., 2019). As a result, the use of CAD offers an optimal model for product development.
Accompanying the development of CAD technology, creative computer-aided manufacturing (ArtCAM) has been introduced to provide rapid and effective manufacturing of extremely complex artistic designs (Anggoro et al., 2018;Anggoro P. et al., 2019). ArtCAM can be used for design purposes in a variety of manufacturing industries, including souvenirs, jewelry, ceramics, and component manufacturing. Additionally, it is appropriate for producing 2D and 2.5D models with a high level of feature complexity. The ArtCAM software modeling process begins by generating a 2D vector model from an image file. This 2D vector generation technique can be used to create a new design that replicates an original pattern, thereby fulfilling market demand. It has been previously demonstrated that design processes using ArtCAM can successfully produce a master set of patterns for ornate Islamic ceramic wall tiles (Chua et al., 1997a;Chua et al., 1997b;Oancea et al., 2013;Zhang et al., 2018;Anggoro P. W. et al., 2019;Han et al., 2021).
Finally, the additive manufacturing technique, often called 3D printing, has long been implemented in structural design (Bechthold et al., 2015;Bechthold, 2016). This method stems primarily from the ability to rapidly model complex components without the limitations of flat tooling rates by depositing layers of a relatively high-viscosity clay onto a fixed surface using a scaffold or another approach (Koshnevis et al., 2001). This technique has also been found suitable for the 3D manufacturing of small ceramic items (Zocca et al., 2015). Thus, comparatively small objects with complex geometries can be created using reproductive computer approaches (Bechthold et al., 2015) such as those reliant on CAD/CAM.
Various extant mosaic patterns are available as models for new ceramic tile products used as ornamentation on floors and walls in cottages, hotels, historical structures, and mosques. In arts, design, and architecture, an ornament is a decorative element that can be utilized to enhance the appearance of a particular part of a structure or object by evoking emotion or embellishing design. Ornaments can be carved from stone, wood, metal, or clay. The ornaments featured in mosques are typically based on specific Islamic ornamental motifs ( Figure 1) defined by embellishments that take the shape of geometry, flowers, patterns, and calligraphy. Such Islamic geometric patterns (IGPs) have been utilized decoratively on walls, ceilings, doorways, domes, and towers for centuries (Abdullahi and Embi, 2013). Generally, IGPs take the form of Zillij motifs, an ornamental Islamic art form that incorporated geometric elements into continuous patterns and lines that repeat and rotate their basic shapes, as illustrated in Figure 1. Of particular note, Islamic horticulture enjoyed a renaissance in the eighth century, extending from India to Northern Africa and eventually reaching Spain. Comprising an astonishingly humorous and diverse artistic character, this practice was sustained by various Islamic cultural civilizations. The warm climate of the Islamic lands and the widespread use of block construction mean that ceramics offered an attractive and appropriate form of embellishment for the interior and exterior ramparts of both sacred and secular structures. Indeed, glassy exteriors such as ceramics conserve energy and are easy to clean in a sandy environment (Yao, 2017;Anggoro et al., 2018). Symmetrical ornamentation, calligraphic tiles, floral shapes, Persian tile models, Abbasid or Seljuk slates, tile models and elegances, Timurid tiles, Il-Khnaid tiles, Safavid tiles, Iznik tiles, and Egyptian and Syrian tiles have all been discussed in great detail (Sanchez et al., 2010;Abdullahi and Embi, 2013;Anggoro et al., 2018;Taib and Rasdi, 2021).
Batik is a native Indonesian art form that can be applied as a ceramic tile design motif. The many types of batik reflect a philosophy drawn from the diverse customs of Indonesian civilizations. A batik motif can be fashioned in a variety of ways and can be created by combining outlines and forms into a single unit representing the basis of the batik pattern. Batik patterns can include human, animal, abstract, geometric, or other forms. Indeed, both IGPs and Indonesian batik motifs (IBMs) make extensive use of precise depictions of natural elements, such as flowers and trees. Furthermore, IBMs are frequently used to express social standing. Finally, batik is an inherited tradition. As a result, IBMs frequently become synonymous with the individual craftsmen who originally produced them. The ability to adopt an IBM to ceramic tiles while retaining the historical significance of Indonesian batik offers an important approach to making this cultural product more widely available. Thus, in this study, the ornamental motifs in Figure 1 were turned into wall tiles combining IGP and batik features.
Historically, the notion of traditional ceramic art in Indonesia, as well as the stages of the ceramic design and fabrication processes, relies solely on the designer's creativity and originality. Consequently, the manufacture of high-quality ceramic artwork frequently takes a long time, resulting in high prices that are unaffordable to most customers. In fact, a year is often required to develop a single type of ceramic wall tile design from the image stage to the ceramic model stage. The present design process begins with the generation of concepts, followed by the hand-drawing of sketches, then the development of 3D drawings and renderings to inform 3D models. Given this process, the manufacture of highly precise ceramic wall tiles can likely be improved using advanced design and fabrication based on ArtCAM and 3D printing technology. Indeed, the timeconsuming process of pattern development and model production highlights the benefits of using computational approaches to accelerate the development and production of ceramic wall tiles with unique ornamentation such as IGPs and IBMs that highlight natural beauty and flora. However, little research has been conducted on the design and fabrication stages of patterned ceramic wall tiles, and there remains a lack of relevant data in the literature describing advances in these processes.
The research issue addressed in this study was identified in the investigation of a challenge experienced by a local ceramic manufacturer in Boyolali, Central Java, regarding the production of puzzle-type ceramic wall tiles. These tiles were being manufactured manually (by hand), resulting in imprecise tiles and their inappropriate fit when assembled into a wall covering. In addition, this manual manufacturing process required a lengthy design time of approximately 10-12 months, as the size of the ceramic wall images created from printed photographs was inconsistent. As a result, this study investigated an advanced method for the design and manufacture of ceramic wall tiles with a flowery batik-based pattern for use in a Jakarta mosque partition. Given the intended application of these tiles, the distinguishing structures and divisions of IGPs were included in the output elaborate and decorative themes. The findings of this study are intended to contribute to the design and production of ceramic tiles with distinctive batik themes, part of Indonesia's unique national heritage.

RESULTS AND DISCUSSION
In this section, the elements of the identified IGP/IBM tile patterns shown in Figure 1 are first analyzed. Then, the efficacy of the proposed application of ArtCAM to the design and fabrication of Islamic puzzle ceramic tile walls is discussed. Finally, the accuracy of the proposed design and fabrication method is demonstrated using measurements collected throughout the proposed process.

Analysis of IGP and IBM
Substantial commonalities can be observed among the IBMs in Figure 1. Indeed, the primary features of vegetative ornamentation associated with Islamic architecture are likely present based on the findings of prior studies (30). The use of IBMs was therefore considered to ascertain whether the proposed ceramic tile wall design with ornamentation bore a substantial resemblance to the adornment found in Islamic architecture, particularly in the Middle East (Figure 8), as these tile designs were intended for application in a mosque. The adequacy of this verification stage was confirmed during the vector-matrix generation stage, which was performed using the ArtCAM 2015R2 software ( Figure 2). The results indicated that IGP serves as the foundation of types 001-005, while the Iznik tile serves as the foundation for types 006-008. Furthermore, the four IBM types 002, 005, 007, and 008 in Figure 1 specifically corresponded to the evolution of major elements of Islamic floral ornamentation ( Figure 9). Ornamentation types 001-004 in Figure 1 exhibit a concealed Islamic design that disperses mass, creates space, encloses, energizes, and shocks the human eye. Notably, geometric displays, blossoming plant structures, and enticing rationales set these patterns apart from Western craftsmanship, which is typically centered on nature and the human body. Geometry is critical to Islamic decoration, and Islamic artisans have been widely acknowledged to have accurately replicated the symmetrical principles of nature; as a result, geometric design has grown to a level of sophistication and modernism not seen previously ( Figure 6) (Abdullahi and Embi, 2013;Anggoro et al., 2018). Indeed, flowers and trees have frequently been used as embellishment motifs (Figure 1), in arabesque designs, to define space, perform mindboggling tricks with color, and create a three-dimensional effect ( Figures 5, 6A). Finally, pattern types 005, 007, and 008 were selected for modeling and production using the proposed method.
The link between IGP and IBM is summarized in Figures 8, 9. This tight relationship also supported the tile maker's request that the researchers adapt the IBM into a 2.5 creative CAD design model (Figures 2, 10) with the same qualities as an IGP. As a result, the principles of Islamic ornamentation may be made practical for the design and manufacture of wall tiles set on the exterior walls of places of worship, such as mosques or prayer rooms ( Figure 6B). Quality Measurement of Ceramic Tiles Figure 4 illustrates the stages of development for each ceramic tile design, which includes casting, coating, and firing procedures at a local ceramic production factory. After establishing the model for each component constituting the given ceramic tile wall pattern, a 100 cm × 100 cm sample of each ceramic tile pattern was obtained (see Figure 5) as shown in Figure 6A-C.

Application of ArtCAM to Islamic Puzzle Ceramic Tile Walls
The origins of all ceramics are perplexing. These ornate Islamic wall tile patterns were then successfully placed on the walls of Jakarta's Al Huda Mosque with excellent precision and accuracy ( Figure 6D). The design and manufacture of these ceramics resulted in the creation of ceramic tiles (Chua et al., 1997a;Chua et al., 1997b;Sanchez et al., 2010;Sanz et al., 2012;Oancea et al., 2013;Anggoro et al., 2015;Anggoro et al., 2018;Anggoro et al., 2021). Note that the dimensional accuracy of the ceramic tile plan, determined by comparing the initial design dimensions with measurements of the printed model and final tiles, is crucial. The geometric quality of the completed ceramic wall tiles was therefore confirmed for the components of three different patterns (005, 007, and 008) to determine how much dimensional variation existed between the final product, the ArtCAM model images, and the master molds ( Figure 3) to illustrate the viability of the change in fabrication strategy  from the use of a 2D to a 2.5D standard (RP) using the 2.00mm tolerance provided by the ceramics manufacturer. Measurement points were identified through brainstorming with the creative group to highlight focal points, with each measurement selected to require a minimum of additional measurements ( Figure 12). Measuring these dimensions  established the appropriate angle size for the master of the print pattern to produce a high-quality mold. Later, the measurement of the Safavid tile design was modified to also include two angles, namely, 80°and 85°. The chosen perspectives was the product of brainstorming with the research and development department at the ceramic factory. The kiln firing of ceramics causes clay to shrink as its water content evaporates, resulting in a decrease in size; the degree of this decrease is referred to as shrinkage. As a result, the dimensions of the tiles must be increased according to specific shrinkage value of the clay as well as the kiln firing technique utilized during manufacturing (Anggoro et al., 2021). The  Table 4) Similarities between the customer images and main elements of Islamic floral ornamentation.
Frontiers in Mechanical Engineering | www.frontiersin.org February 2022 | Volume 7 | Article 799086 dimensions acquired after shrinkage (the final dimensions of the ceramic tile) should thus be close to 15% smaller than those of the master model without shrinkage. The final dimensions of the clay models and ceramic wall tiles are shown in Supplementary Table S1, in which the yellow cells highlight instances of shrinkage in excess of 15%, with the blue cells indicating the corresponding dimensions of the RP model and the green cells indicating the size of the actual tiles. When the shrinkage exceeded 15%, measurement validation was carried out with the results presented in Table 1. In this table, the green cells indicate when the tile size measurements were at the control limit or lower limit. The black bold numbers indicate when the tile size was within the limits, and the red bold numbers indicate when the tile size was at the lower limit and therefore included in the unsafe category. However, in all cases, factory quality control decided to continue the tile fabrication process because the tolerances were within the range approved by the manufacturer.
Several equations were utilized in this study using the data in Supplementary Table S1 to demonstrate how the final size of the ceramic tile is within the tolerance range set jointly by the research team and engineers from the ceramic plant. The following simple mathematical equations were used to quantify the dimensional accuracy of the resulting tiles: where E 1 , E 2 , and E 3 denote the deviations between measurements (mm); a is the measurement of a component on the RP model (mm); b is the measurement of the same component on the core and cavity mold (mm); c is the measurement of the same component on the raw clay tile prior to firing (mm); and d is the measurement of the same component on the final ceramic tile (mm). The overall shrinkage was determined as follows:

Calculated shrinkage
Clay model − Ceramic tile Clay model × 100% where calculated shrinkage is the percent shrinkage of the raw clay model dimensions produced from the core and cavity molds relative to the final ceramic tile dimensions. Frontiers in Mechanical Engineering | www.frontiersin.org February 2022 | Volume 7 | Article 799086 A shrinkage limit of 11%-15% was determined by the authors using a variety of ceramic engineering resources (Chua et al., 1997a;Oancea et al., 2013;Fergiawan et al., 2020;Anggoro et al., 2021) that calculated the percent shrinkage of clays utilized in the ceramics industry. The clay used to create the Islamic puzzle tile walls in this study was bone China type with a 15% shrinkage (Fergiawan et al., 2020;Anggoro et al., 2021). This value was then used to denote the limits of the selected measurements according to the shrinkage value; after the firing process was completed, the selected dimensions were reduced by 15% with a tolerance of 2.00 mm. In this study, the geometries measured during the modeling process were defined as the prototype model sizes (for the RP model and core/cavity molds) and final product sizes (for the raw, unfired clay tile and final ceramic tile). The prototype model size was determined using data collected at predefined locations and measured by researchers using a 0.01mm caliper. The final product size was determined in a similar fashion. The results are reported in Supplementary Table S1 for the dimensions defined in Figure 12. The results show that the variation was within 1.00 mm for the 80°and 85°plan variants,  The meaning of the value marked in bold + this value indicates the actual geometry of the finished ceramic and has experienced a shrinkage of 15% so that the fabrication process is declared safe.
Frontiers in Mechanical Engineering | www.frontiersin.org February 2022 | Volume 7 | Article 799086 while the maximum standard for ceramic production plants is 2.00 mm. Eqs 1-4 were used to generate the shrinkage data corresponding to the measured lengths, and these results are also presented in Supplementary Table S1. The verification of several dimensions that exhibited shrinkage values greater than 15% is presented in Table 1. The final results show that shrinkage values greater than 15% were present at point E on mosaic C that did not meet the standard, as the final dimension of the ceramic tile was smaller than the lower limit (130.32 mm < 131.48 mm) and (130.68 mm < 131.54 mm).
The results of this study indicate that the shrinkage of ceramic wall tiles varies depending on the measurement. According to Supplementary Table S1, the shrinkage of the three types of ceramic tiles evaluated (patterns 005, 007, and 008) was typically less than 15%. Ceramics with a shrinkage greater than 15% were subjected to verification tests with tolerances of 1-2 mm. After verification of the seven measurements on each mosaic type, only two on mosaic C were deemed unsafe to proceed to fabrication at the factory, but the ceramic manufacturer accepted these dimensions nonetheless and continued to fabricate the tiles for installation.
Thus, the size deviation between the 2.5D model, RP master, raw ceramic tile, and final ceramic tile was found to meet the established standards, indicating that the 3D-printed master model could be confidently used as a shape design for the investigated wall tiles. Furthermore, the results indicate that the proposed design and fabrication methods decreased the time-to-production from 10-12 to 1-1.5 months, a 90% reduction. This accuracy is maintained throughout the manufacturing and installation of the tile arrangement, meeting the requirements of the ceramic factory and resulting in a final product that satisfies the legal and aesthetic requirements of the Masjid Al Huda in Jakarta.

CONCLUSION
In this study, the stages of realizing a unique ceramic wall tile design combining traditional IGPs with IBMs using ArtCAM 2015 and 3D-printing technology were demonstrated within the local Indonesian porcelain ceramics industry. To do so, the integration of computer fabrication skills with traditional ceramic production techniques was realized. The ceramic tiles with geometric and floral designs exhibited the desired surface forms and dimensional fit established in 2.5D CAD and reflected in the 3D modeling design models. Furthermore, the approach developed in this study can reduce the design-to-fabrication time by up to 90%.
In future work, collaborative technologies such as 3D CAD, CAM, and computer numerical control can be utilized in conjunction with conventional ceramic technology to design and create ceramic tableware and tiles with a variety of textures, patterns, and shapes. This approach is expected to address design and manufacturing issues that have plagued ceramics producers in Indonesia, who have a long history of generating bespoke ceramic tiles.

DATA AVAILABILITY STATEMENT
The original contributions presented in the study are included in the article/Supplementary Material; further inquiries can be directed to the corresponding author.

AUTHOR CONTRIBUTIONS
PWA is the main author of this research. He did all the design, manufacturing, data analysis, and writing of the paper. TY and SF designed and manufactured 3D print of ceramic wall tiles. MT, BB, and ODWW contributed to collecting data measurement and fabricating ceramic wall tiles at industry. DBS and JJ analyzed and interpreted the data. APB contributed the concept and wrote the paper with PWA. All authors contributed to the article and approved the submitted version.